Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho nghe cnc snippets" » "khoe nghe cnc snippets", "so nghe cnc snippets", "o nghe cnc snippets", "kho nghe cong snippets", "kho nghe che snippets", "kho nghe co 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: (((("kho nghe cnc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho nghe cnc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho nghe cnc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho nghe cnc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.