Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ca yao chen snippets" » "ca yan chen snippets", "ca bao che snippets", "ca xay chen snippets", "ca dao chen snippets", "ca cao chen snippets", "ca bao chen 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: (((("ca yao chen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ca yao chen snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ca yao chen snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ca yao chen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.