Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho nghe ca snippets" » "khoe nghe ca snippets", "so nghe ca snippets", "o nghe ca snippets", "kho nghe cua snippets", "kho nghe cao snippets", "kho nghe cad 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 ca 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 ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho nghe ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho nghe ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.