Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac duy dot snippets" » "khac duan dot snippets", "pham duy dot snippets", "khac di dot snippets", "khac duy doc snippets", "khac 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: (((("khac 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: (((("khac duy dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac duy dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac duy dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.