Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan nam da snippets" » "khoan cam da snippets", "hoang nam da snippets", "khoan va da snippets", "khoan nam dan snippets", "khoan nam a snippets", "khoan nam va 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: (((("khoan nam da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan nam da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan nam da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan nam da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.