Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tuong cua » truong cua, huong cua, thong cua
tong cua » thong cua, trong cua, cong cua
cong tan » cong tac, cong san, cong thanh
tan hanh » tan thanh, tang hanh, toan hanh
hanh cad » hanh cac, hanh cat, hanh cap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh ((tong cua) or (tuong cua)) nhung cong tan hanh cad~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((tong cua) OR (tuong cua)) nhung cong tan hanh cad*.