Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
cu thuong » cua thuong, cuu thuong, tu thuong
cong tac » cong ty
than cau » toan cau, phan cau, than cap
khan cap » khan ap, than cap, khoan cam
cong cu » chung cu

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

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