Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc thu hoi snippets" » "luc thi hoi snippets", "luc tu hoi snippets", "cuc thue hoi snippets", "luc thu hoai snippets", "luc thu phoi snippets", "luc thu hai snippets"
"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: (((("luc thu hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc thu hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc thu hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc thu hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.