Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, hang cong
cong khanh » cong thanh, cong khan, cong nhan
khanh toan » thanh toan, khanh thanh, khanh thuan
hieu manh » chieu xanh, hieu nganh, hien hanh
toan cau » toan cao, toan ban, toan tap

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: hoc ((hieu manh) OR (dieu hanh)) - manh ((trung tuan) OR (truong cua)) nhung cong khanh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - manh ((trung tuan) or (truong cua)) nhung cong khanh toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - manh ((trung tuan) or (truong cua)) nhung cong khanh toan cau*.