Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa nuoi da snippets" » "khoa noi da snippets", "khoan nhoi da snippets", "khoa ngoai da snippets", "khoa nuoi day snippets", "khoa nuoi ga 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: (((("khoa nuoi 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: (((("khoa nuoi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa nuoi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa nuoi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.