Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dinh » thanh dinh, hinh dinh, hanh tinh
cuu nhung » cua nhung, cuu phuong, chua nhung
hoi hieu » hoi phieu, hoi tieu, moi hieu
dinh cuu » dinh chi
toan dau » toan cau, toan du, toan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - hanh dinh cuu nhung cong trinh toan dau~.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - hanh dinh cuu nhung cong trinh toan dau*.