Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen yu cham snippets" » "chen tu cham snippets", "chen vu cham snippets", "chen qua cham snippets", "chien yu cham snippets", "che yu cham snippets", "chan yu cham 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 yu cham 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 yu cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen yu cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen yu cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.