Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan lu hoi snippets" » "nhan luc hoi snippets", "nhan su hoi snippets", "nhan xu hoi snippets", "nhan le hoi snippets", "nhan luat hoi 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: (((("nhan lu 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: (((("nhan lu hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan lu hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan lu hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.