Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi hao le snippets" » "khoi nhat le snippets", "khi hau le snippets", "thi hao le snippets", "khoi ha le snippets", "khoi dao le snippets", "khoi ho le 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 hao le 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 hao le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi hao le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi hao le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.