Perhaps you should try some spelling variations:
"toan toan cau snippets" » "toan tran cau snippets", "thanh toan cau snippets", "toan doanh cau snippets", "toan toan cao snippets", "toan toan ban snippets", "toan toan tap snippets"
"dung java java snippets" » "dung va java 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: (((("toan toan cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan toan cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan toan cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan toan cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.