Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan huy don snippets" » "phan tu don snippets", "phan xay don snippets", "van huy don snippets", "phan huy dong snippets", "phan quy don snippets", "phan huy bon 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 huy don 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 huy don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan huy don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan huy don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.