Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan tan voi snippets" » "nhan tai voi snippets", "nhan dan voi snippets", "nhan tao voi snippets", "nhan than voi snippets", "nhan ban voi snippets", "nhan tan 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 tan voi 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 tan voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan tan voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan tan voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.