Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu de ton snippets" » "hieu ve ton snippets", "hieu he ton snippets", "hieu le ton snippets", "hieu de toni snippets", "hieu de tin snippets", "hieu ke ton 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: (((("hieu de ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu de ton snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu de ton snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu de ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.