Perhaps you should try some spelling variations:
trung thanh » truong thanh
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
trung tuan » trung tam, tran tuan, truong thanh
nhung cong » dung cong, thong cong, hang cong
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - hanh ((trung tuan) OR (trung thanh)) nhung cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chiet tach - hanh ((trung tuan) OR (trung thanh)) nhung cong dan ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - hanh ((trung tuan) OR (trung thanh)) nhung cong dan ((toan cau) or (toan tap))*.