Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao lang son snippets" » "nam lang son snippets", "nao dang son snippets", "nhan lang son snippets", "nao nang song snippets", "nao bang song snippets", "nao anh 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: (((("nao lang 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: (((("nao lang son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao lang son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao lang son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.