Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
cong san » cong tac
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - thanh ((tung cua) or (dung cua)) nhung cong san ((than cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh ((tung cua) OR (dung cua)) nhung cong san ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - thanh ((tung cua) or (dung cua)) nhung cong san ((than cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - thanh ((tung cua) or (dung cua)) nhung cong san ((than cap) OR (khan cap))*.