Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan van voi snippets" » "tran van voi snippets", "tang van voi snippets", "luan van voi snippets", "tan van loi snippets", "tan van noi snippets", "tan van von 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 van 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 van voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan van voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan van voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.