Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhiet nang » nhiet dong, viet nang, nhieu tang
trung cong » truong cong, trong cong, trung uong
trung cua » truong cua, trung tuan, trung cap
cua trung » cua truong, xuan trung, cua nhung
ban thanh » ban hanh, ban hang
thanh man » thanh san, thanh van, thanh mau
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chinh sach) or (nhiet nang)) - thanh trung cua trung cong ban thanh man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chinh sach) OR (nhiet nang)) - thanh trung cua trung cong ban thanh man.
• Adding a wildcard symbol may retrieve word variants: hoc ((chinh sach) or (nhiet nang)) - thanh trung cua trung cong ban thanh man*.