Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat tieu cao snippets" » "day tieu cao snippets", "dat hieu cao snippets", "dat yeu cao snippets", "dat lieu cao snippets", "dat sieu cao snippets", "dat chieu 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 tieu 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 tieu cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat tieu cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat tieu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.