Ebay Finding API: don't get the same number of results by API call as manual search using the same filters on ebay

I am using finding API

of e-bay

to get a complete list of items.

I am using my sample code to call the API. But when I search for a keyword and the same filter, I get a subset of the result, but I don't get a complete list of items. This only gave the best results.

These are my filters:

var filterarray = [
  {"name":"FreeShippingOnly", 
   "value":"true", 
   "paramName":"", 
   "paramValue":""},
   {"name": "Condition",
    "value": "Used",
    "paramName":"", 
    "paramValue":""},
   {"name": "SoldItemsOnly",
     "value": "true",
    "paramName":"", 
    "paramValue":""},
  ];

      

        
        
        
      

    

Creates an indexed URL slice from an array of item filters

function  buildURLArray() {
   // Iterate through each filter in the array
  for(var i=0; i<filterarray.length; i++) {
    //Index each item filter in filterarray
    var itemfilter = filterarray[i];
    // Iterate through each parameter in each item filter
for(var index in itemfilter) {
  // Check to see if the paramter has a value (some don't)
  if (itemfilter[index] !== "") {
    if (itemfilter[index] instanceof Array) {
      for(var r=0; r<itemfilter[index].length; r++) {
      var value = itemfilter[index][r];
      urlfilter += "&itemFilter\(" + i + "\)." + index + "\(" + r + "\)=" + value ;
      }
    } 
    else {
      urlfilter += "&itemFilter\(" + i + "\)." + index + "=" + itemfilter[index];
    }
  }
}
}

 }  // End buildURLArray() function


        // Execute the function to build the URL filter

buildURLArray(filterarray);

      

        
        
        
      

    

This is my url:

var url = "http://svcs.ebay.com/services/search/FindingService/v1";
    url += "?OPERATION-NAME=findCompletedItems";
    url += "&SERVICE-VERSION=1.12.0";
    url += "&SECURITY-APPNAME=my_app_id";
    url += "&GLOBAL-ID=EBAY-US";
    url += "&RESPONSE-DATA-FORMAT=JSON";
    url += "&callback=_cb_findItemsByKeywords";
    url += "&REST-PAYLOAD";
    url += "&keywords=%22iphone+5%22";
    url += "&paginationInput.entriesPerPage=25";
    url += "&sortOrder=EndTimeSoonest";
    url += urlfilter;

      

        
        
        
      

    

I have carefully checked the FindindAPI documentation and every filter parameter and corresponding value. Is this some functionality finding API

that is limited to getting a complete list, or did I do something wrong?