Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
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 quang)) - 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 quang)) - thanh cong cu thuong cong tac ((than cau) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu quang)) - thanh cong cu thuong cong tac ((than cau) or (khan cap))*.