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