Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nan cao dong snippets" » "nan cao dang snippets", "nan lao dong snippets", "nan cao cong snippets", "nang cao dong snippets", "nam cao dong snippets", "toan cao dong 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: (((("nan cao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nan cao dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nan cao dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nan cao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.