Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
chinh chau » chinh cho, chinh phu, minh chau
doi chieu » doc hieu, doi chi, ho chieu
dang cong » dung cong
chinh cau » chinh ca, chinh can, chinh tai
tung cao » nung cao, truong cao, trung cap
cong san » cong tac

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 tung cao dang cong san ((chinh cau) or (chinh chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tung cao dang cong san ((chinh cau) OR (chinh chau)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tung cao dang cong san ((chinh cau) or (chinh chau))*.