Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa mo de snippets" » "khoa ma de snippets", "khoa co de snippets", "khoa mong de snippets", "khoa bo de snippets", "khoa mo te 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 mo de 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 mo de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa mo de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa mo de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.