Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu lang » chieu sang, hieu quang, nhieu tang
nhan dang » nhan dan, phan dang, tran dang
dang cua » dung cua, dong cua, mang cua
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, cong dong
than cao » toan cao, thai cao, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (chieu tinh)) - nhan dang cua dung ((cong dan) OR (huong dan)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) or (chieu tinh)) - nhan dang cua dung ((cong dan) OR (huong dan)) than cao~".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (chieu tinh)) - nhan dang cua dung ((cong dan) OR (huong dan)) than cao*.