Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham huu cu snippets" » "pham duc cu snippets", "pham duy cu snippets", "phan huy cu snippets", "pham huu co snippets", "pham huu du snippets", "pham huu tu 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 cu 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 cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham huu cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham huu cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.