Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam sach du snippets" » "nam sach du snippets", "pham sach du snippets", "lam sang du snippets", "lam sach dau snippets", "lam sach de snippets", "lam sach tu 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 du 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 du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam sach du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam sach du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.