Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao lieu cao snippets" » "dao hieu cao snippets", "da lieu cao snippets", "dan lieu cao snippets", "dao lieu dao snippets", "dao lieu co snippets", "dao lieu bao 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: (((("dao lieu 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: (((("dao lieu cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao lieu cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao lieu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.