Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu van do snippets" » "cuu van do snippets", "huu han do snippets", "luu van do snippets", "huu van dao snippets", "huu van de snippets", "huu van du 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 van do 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 van do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu van do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.