Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
nhan dang » nhan dan, phan dang, tran dang
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
dang cua » dung cua, dong cua, mang cua
ban cau » bang cau, ban can, ban dau
van cau » van dau, van hau, van chat

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: ((ho chieu) OR (doi chieu)) sang - nhan dang cua nhung cong trinh ((ban cau) OR (van cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) sang - nhan dang cua nhung cong trinh ((ban cau) OR (van cau))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) sang - nhan dang cua nhung cong trinh ((ban cau) OR (van cau))*.