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