Does Zimbra support Search within search? Actually I am trying to search something and I have got 100+ results. Is it possible that I can again filter on these 100+ items and perform search on them only?

I saw Zimbra SearchRequest and it supports something like cursors in the SearchRequest. The cursor element seems something like

 [<cursor id="prevId" sortVal="prevSortValue" endSortVal="endSortValue"/> ] 
          // sortVal should be set to the value of the 'sf' (SortField) attribute of the last
          // hit on the previous 'page' of search results.
          // end val is NON-INCLUSIVE
I tried to view search request using livehttpheader in FF but this element is never a part of the SearchRequest. I am using ZCS 4.5.6 open source version and FF