Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
kha nang » phap nang, ky nang, ki nang
cong ban » cong bang, cong san, cong tan
ban hang » ngan hang
hang dau » hang va, hang tai
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - thanh trung ((va hang) or (kha nang)) cong ban hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh trung ((va hang) OR (kha nang)) cong ban hang dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh trung ((va hang) or (kha nang)) cong ban hang dau*.