Perhaps you should try some spelling variations:
thieu sang » thieu khang, thieu quang, hieu lang
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
thanh chau » thanh cha, thanh cham, thanh chu
tong cong » trong cong, cong cong, dung cong
tung cua » trung cua, tuong cua, dung cua
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
hanh cac » hang cac, hanh cat, nhanh cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) or (chieu sang)) - thanh tung cua tong cong dan ((thanh chau) or (hanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sang)) - thanh tung cua tong cong dan ((thanh chau) OR (hanh cac)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (chieu sang)) - thanh tung cua tong cong dan ((thanh chau) or (hanh cac))*.