Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen hoi hoc snippets" » "chen hsi hoc snippets", "chen huei hoc snippets", "chinh hoi hoc snippets", "chen hoa hoc snippets", "chen khoa hoc snippets", "chen hoi chuc 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 hoi hoc 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 hoi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen hoi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen hoi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.