Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao khu doan snippets" » "nao kieu doan snippets", "nao khu do snippets", "nao thi doan snippets", "nuoc khu doan snippets", "dao khau doan snippets", "ngam khu doan 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: (((("nao khu doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao khu doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao khu doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao khu doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.