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