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