Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan hoa du snippets" » "phan loai du snippets", "khanh hoa du snippets", "phan phoi du snippets", "phan hoa dau snippets", "phan hoa lu snippets", "phan hoa su 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: (((("phan hoa 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: (((("phan hoa du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan hoa du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan hoa du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.