Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"tu trang van slippers" » "tu tran van slippers", "tu trang va slippers", "tu trong van slippers", "thu trang van slippers", "ta trang van slippers", "tu trang van slippery"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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