Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
dung phan » dung nhan, dung luan, dung ha
cong cong » cong dong, trong cong, dung cong
trung ha » trung hoc, trung tam, trung cap
cong tan » cong tac, cong san, cong thanh
tan ca » tan cua, tang ca, dan ca
ca ban » cua ban, can ban, cac ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - thanh ((trung ha) or (dung phan)) cong cong tan ca ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - thanh ((trung ha) OR (dung phan)) cong cong tan ca ban*.