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