Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
trung hoc » trung quoc
trung ha » trung tam, trung cap
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - thanh ((trung ha) or (trung hoc)) thuong cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh ((trung ha) OR (trung hoc)) thuong cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh ((trung ha) or (trung hoc)) thuong cong san phan cau*.