Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen co doc snippets" » "cheo co doc snippets", "chuan co doc snippets", "chen co duoc snippets", "chen co hoc snippets", "chen co dot 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: (((("chen co doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chen co doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen co doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen co doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.