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