Following is the code snippet I use which would return zero search results for lengthy search key.
$search_key = "site:play.google.com ".$search_string;
$url = "https://www.googleapis.com/customsearch/v1?key=AIzaSyDgnGNNXCqmdp2Hh2V_CtUPGTb2ulzo0GM&cx=013380388901817775724:zb4u2bzxno4&q=".str_replace(" ", "+", $search_key);
It works well when the search key is shorter. Butyields zero results with longer search keys:
eg: Seach key site:play.google.com Computer and Mathematical Occupations Information Technology
and even lengthier ones yielded no results. But they would return results when I do normal google search.
What is the solution I have such that I can use longer search keys and yield the same search results as the search key would have returned with a normal google search?