Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"cau hoc dan slippers" » "cau hoi dan slippers", "cau hoa dan slippers", "cao hoc dan slippers", "cau hoc dan slippery"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cau hoc dan slippers") OR ("python using java grippers"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( cau hoc dan slippers ) or ( python using java grippers ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cau hoc dan slippers") or ("python using java grippers"))) or ("locating bug code snippets"))*.