Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam sach cao snippets" » "nam sach cao snippets", "pham sach cao snippets", "lam sang cao snippets", "lam sach dao snippets", "lam sach cap snippets", "lam mach cao 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: (((("lam sach cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lam sach cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam sach cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam sach cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.