Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"tu tran van slippers" » "tu luan van slippers", "tu trang van slippers", "tu tren van slippers", "tu than van slippers", "tu tran 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 tran 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 tran van slippers") OR ("python using java grippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu tran van slippers ) or ( python using java grippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu tran van slippers") or ("python using java grippers"))) or ("locating bug code snippets"))*.