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