Edit in JSFiddle

var configuration = {
  searchableFields: ['title', 'tags', 'actors'],
  sortings: {
    name_asc: {
      field: 'name',
      order: 'asc'
    }
  },
  aggregations: {
    tags: {
      title: 'Tags',
      size: 10
    },
    actors: {
      title: 'Actors',
      size: 10
    },
    genres: {
      title: 'Genres',
      size: 10
    }
  }
}

// the rows comes from external resources
// https://github.com/itemsapi/itemsapi-example-data/blob/master/jsfiddle/imdb.js
itemsjs = itemsjs(rows, configuration);

var vm = new Vue({
  el: '#el',
  data: function () {

    // making it more generic
    var filters = {};
    Object.keys(configuration.aggregations).map(function(v) {
      filters[v] = [];
    })

    return {
      query: '',
      // initializing filters with empty arrays
      filters: filters,
    }
  },
  methods: {
    reset: function () {
      var filters = {};
      Object.keys(configuration.aggregations).map(function(v) {
        filters[v] = [];
      })

      this.filters = filters;
      this.query = '';
    }
  },
  computed: {
    searchResult: function () {

      var result = itemsjs.search({
        query: this.query,
        filters: this.filters
      })
      return result
    }
  }
});

<div id="el">
  <nav class="navbar navbar-default navbar-fixed-top">
    <div class="container">
      <div class="navbar-header">
        <a class="navbar-brand" href="#" v-on:click="reset()">ItemsJS movies</a>
      </div>
      <div id="navbar">
        <form class="navbar-form navbar-left">
          <div class="form-group">
            <input type="text" v-model="query" class="form-control" placeholder="Search">
          </div>
        </form>
      </div><!--/.nav-collapse -->
    </div>
  </nav>

  <div class="container" style="margin-top: 50px;">

    <h1>List of items ({{ searchResult.pagination.total }})</h1>

    <p class="text-muted">Search performed in {{ searchResult.timings.search }} ms, facets in {{ searchResult.timings.facets }} ms</p>

    <div class="row">
      <div class="col-md-2 col-xs-2">
        <div v-for="facet in searchResult.data.aggregations">
          <h5 style="margin-bottom: 5px;"><strong style="color: #337ab7;">{{ facet.title }}</strong></h5>

          <ul class="browse-list list-unstyled long-list" style="margin-bottom: 0;">
            <li v-for="bucket in facet.buckets">
            <div class="checkbox block" style="margin-top: 0; margin-bottom: 0;">
              <label>
                <!--<input class="checkbox" type="checkbox" v-on:click="updateFilters(facet.name, bucket.key)" v-model="filters[bucket.key]" value="{{ bucket.key }}" v-bind:value="isChecked2()">-->
                <!--<input class="checkbox" type="checkbox" v-on:click="updateFilters(facet.name, bucket.key)" v-model="filters[bucket.key]" v-bind:value="bucket.key">-->
                <input class="checkbox" type="checkbox" v-model="filters[facet.name]" v-bind:value="bucket.key">
                {{ bucket.key }} ({{ bucket.doc_count }}) 
              </label>
            </div>
            </li>
          </ul>
        </div>
      </div>

      <div class="col-md-10 col-xs-10">
        <div class="breadcrumbs"></div>
        <div class="clearfix"></div>
        <!--<h3>List of items ({{ searchResult.pagination.total }})</h3>-->
        <table class="table table-striped">
          <tbody>
          <tr v-for="item of searchResult.data.items">
            <td><img style="width: 100px;" v-bind:src="item.image"></td>
            <td></td>
            <td>
              <b>{{ item.name }}</b>
              <br />
              {{ item.description }}
            </td>
            <td></td>
            <td>
              <span style="font-size: 12px; display: block; float: left; background-color: #dbebf2; border-radius: 5px; padding: 1px 3px 1px 3px; margin: 2px;" v-for="tag in item.tags">{{ tag }}</span>
            </td>
          </tr>
          </tbody>
        </table>
        <div class="clearfix"></div>
      </div>

      <div class="clearfix" style="margin-bottom: 100px;"></div>
    </div>
  </div>
</div>