Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
cua nhung » va nhung
theo hop » theo phap, thao hoc, theo ucp
hop manh » hop danh, ho manh, hop mang
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
ran cau » van cau, can cau, tran chau
ban cau » bang cau, ban can, van cau

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 hop manh - anh tang cua nhung ((cong ty) OR (cong thanh)) ((ran cau) OR (ban cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hop manh - anh tang cua nhung ((cong ty) or (cong thanh)) ((ran cau) OR (ban cau))~".
• Adding a wildcard symbol may retrieve word variants: theo hop manh - anh tang cua nhung ((cong ty) or (cong thanh)) ((ran cau) OR (ban cau))*.