Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen ho doc snippets" » "hen ho doc snippets", "che ho doc snippets", "chun ho doc snippets", "chen hoa doc snippets", "chen ho duc snippets", "chen co doc 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 ho 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 ho doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen ho doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen ho doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.