Perhaps you should try some spelling variations:
trinh than » trinh thanh, trinh han, trinh toan
cong huong » cong thuong, cong luong, cong hung
theo chua » theo chu, ho chua, cheo cua
chua xang » chua nang, chuc nang, chu bang
manh toan » thanh toan, anh tuan, tinh toan
than cua » nhan cua, thai cua, ban cua
dan than » dan chan, ban than, van than

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chua xang - trinh than cua cong huong ((dan than) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chua xang - trinh than cua cong huong ((dan than) OR (manh toan)) cau*.