Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co loa cua snippets" » "co loai cua snippets", "co hoa cua snippets", "co lua cua snippets", "co loi cua snippets", "co lon cua 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: (((("co loa cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co loa cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co loa cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co loa cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.