Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan chi voi snippets" » "luan choi voi snippets", "luan khi voi snippets", "luan cham voi snippets", "quan chi voi snippets", "lan chi 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: (((("luan chi 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: (((("luan chi voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan chi voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan chi voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.