Perhaps you should try some spelling variations:
trung thanh » truong thanh
trung tuan » trung tam, tran tuan, truong thanh
phung cong » nhung cong, phong cong, nhung chong
khi tinh » khoi tinh, khi sinh, kho tinh
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
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: doi khi tinh - thanh ((trung tuan) or (trung thanh)) phung cong tac ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi tinh - thanh ((trung tuan) OR (trung thanh)) phung cong tac ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi khi tinh - thanh ((trung tuan) or (trung thanh)) phung cong tac ((toan cau) or (toan ban))*.