Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"van huu hanh slippers" » "van huu han slippers", "van luu hanh slippers", "van thuc hanh slippers", "van huy hanh slippers", "van hau hanh slippers", "san huu hanh slippers", "van huu hanh 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van huu hanh slippers") or ("python using java grippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van huu hanh slippers") OR ("python using java grippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van huu hanh slippers ) or ( python using java grippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van huu hanh slippers") or ("python using java grippers"))) or ("locating bug code snippets"))*.