Perhaps you should try some spelling variations:
"thoan tran cau snippets" » "hoan tran cau snippets", "toan tran cau snippets", "tan tran cau snippets", "thoan tran chau snippets", "thoan toan cau snippets", "thoan ran cau 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: (((("thoan tran 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: (((("thoan tran cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thoan tran cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thoan tran cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.