Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe viet do snippets" » "nghiep viet do snippets", "nghia viet do snippets", "nghe hieu do snippets", "nghe viet dao snippets", "nghe viet doi snippets", "nghe viet o 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: (((("nghe viet do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nghe viet do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe viet do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe viet do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.