Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tay cao snippets" » "doi tac cao snippets", "dai tay cao snippets", "doi cay cao snippets", "doi tao cao snippets", "doi tay co snippets", "doi toan 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: (((("doi tay 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: (((("doi tay cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tay cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tay cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.