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