Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thau duy dot snippets" » "tu duy dot snippets", "pham duy dot snippets", "thau dau dot snippets", "thau duy doc snippets", "thau duy dong 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: (((("thau duy dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thau duy dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thau duy dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thau duy dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.