Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham huu can snippets" » "pham duc can snippets", "pham duy can snippets", "phan huy can snippets", "pham huu chan snippets", "pham huu han snippets", "pham hau can 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: (((("pham huu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham huu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham huu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham huu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.