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