Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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 - hanh trung cua dung cong tac ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh trung cua dung cong tac ((than cap) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh trung cua dung cong tac ((than cap) or (khan cap))*.