Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
duong cong » dung cong, luong cong, duong trong
hieu lang » chieu sang, hieu quang, nhieu tang
tran tuan » tran xuan, tran quang, tran thanh
nho hieu » nha hieu, nho sieu, nhu hieu
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho hieu lang - hanh ((trung tuan) or (tran tuan)) duong cong tan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho hieu lang - hanh ((trung tuan) OR (tran tuan)) duong cong tan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh ((trung tuan) or (tran tuan)) duong cong tan ((toan cao) or (toan ban))*.