Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao he cao snippets" » "tao he cao snippets", "nao de cao snippets", "nam he cao snippets", "nao he co snippets", "nao te cao snippets", "nao he cac 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 he 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: (((("nao he cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao he cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao he cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.