Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat quan cao snippets" » "dat quang cao snippets", "dan quan cao snippets", "dat luan cao snippets", "dat quan cau snippets", "dat juan cao 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: (((("dat quan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat quan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat quan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat quan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.