Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi nang do snippets" » "hoi nang do snippets", "khoi nganh do snippets", "khoai lang do snippets", "khoi nang doc snippets", "khoi nang dao snippets", "khoi nang du 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: (((("khoi nang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi nang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi nang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi nang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.