Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"dung cho can slippers" » "dung cho cac slippers", "dung cho san slippers", "dung cho phan slippers", "dung cho can 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: (((("dung cho can slippers") or ("python using java grippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cho can slippers") OR ("python using java grippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cho can slippers ) or ( python using java grippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cho can slippers") or ("python using java grippers"))) or ("locating bug code snippets"))*.