Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
cao thuong » cao truong, ca thuong, cho thuong
doi chieu » doc hieu, doi chi, mot chieu
trung cao » truong cao, trung cap, trung co
gian cham » gian cua, gian cac, gian ha
cong dan » cong san, cong tan, huong dan

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 sang - thanh trung cao thuong cong dan gian cham~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung cao thuong cong dan gian cham*.