Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa la con snippets" » "khoa ma con snippets", "khoa ha con snippets", "khoa luan con snippets", "khoa la don snippets", "khoa va con snippets", "khoa ga con 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 la con 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 la con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa la con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa la con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.