Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cam viet do snippets" » "cham viet do snippets", "ca viet do snippets", "nam viet do snippets", "cam viet dao snippets", "cam viet doi snippets", "cam 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: (((("cam 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: (((("cam viet do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cam viet do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cam viet do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.