Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
thanh toan » thanh hoa, thanh san, tinh toan
thien anh » thien danh, tien anh, thien chanh
trung cua » truong cua, trung tuan, trung cap
ban cong » bang cong, van cong, phan cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) OR (thien thanh)) - thanh trung cua ban cong ((thanh toan) or (dan gian)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (thien thanh)) - thanh trung cua ban cong ((thanh toan) OR (dan gian)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien anh) OR (thien thanh)) - thanh trung cua ban cong ((thanh toan) or (dan gian)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) OR (thien thanh)) - thanh trung cua ban cong ((thanh toan) or (dan gian)) cao*.