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