Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nham van cho snippets" » "pham van cho snippets", "nha van cho snippets", "nam van cho snippets", "nham van chi snippets", "nham san cho snippets", "nham van chat 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: (((("nham van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nham van cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nham van cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nham van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.