Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
thiet yeu » thiet ke, theo yeu
trung cua » truong cua, trung cap, dung cua
tong cong » trong cong, cong cong, dung cong
theo chu » theo chieu, cho chu, chao chu
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (thiet yeu)) tinh - manh ((trung cua) or (trung tuan)) tong cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (thiet yeu)) tinh - manh ((trung cua) OR (trung tuan)) tong cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (thiet yeu)) tinh - manh ((trung cua) or (trung tuan)) tong cong tan than cau*.