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