Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho lam son snippets" » "nhom lam son snippets", "nha lam son snippets", "nghe lam son snippets", "nho lam san snippets", "nho lam sang snippets", "nho lang son 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: (((("nho lam son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nho lam son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho lam son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho lam son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.