Elasticsearch多查询每个列过滤器的两个值

Question

我有一些像这样的查询

GET _search
{
"size":6,
"query":{
    "filtered":{
        "query":{
            "query_string":{
                "query":"some keyword",
                "fields":["title","content"]}       
            },
    "filter":{
        "match":{
            "channel.SiteName":"Photo Video"}}        
        }    
    },
"sort":[
    {"_score":{"order":"asc"},
    "date":{"order":"desc"}}
    ],
"aggs":{"SiteNames":{"terms":{"field":"channel.SiteName"}}}
}

它有效，

但我只是从查询中获取抽象值

我希望从每个SiteName =照片和视频中获取3个值