Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam cua voi snippets" » "nam cua voi snippets", "lam chat voi snippets", "lam chua voi snippets", "lam cua vi snippets", "lam cua 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: (((("lam cua 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: (((("lam cua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam cua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam cua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.