Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu luc doi snippets" » "huu duc doi snippets", "huu loc doi snippets", "hieu luc doi snippets", "huu luoc doi snippets", "huu lua doi snippets", "huu luc moi 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: (((("huu luc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huu luc doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu luc doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu luc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.