Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen so toc snippets" » "chen hsi toc snippets", "khien so toc snippets", "chen so hoc snippets", "chen co toc snippets", "chen ho toc 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 so toc 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 so toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen so toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen so toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.