Perhaps you should try some spelling variations:
bien tinh » bi tinh, diep tinh, ban tinh
trung cap » truong cao, trung tam
tong cong » trong cong, cong cong, dung cong
yen tinh » tuyen tinh
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((bien tinh) or (yen tinh)) - hanh ((trung cap) or (tang cua)) tong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((bien tinh) OR (yen tinh)) - hanh ((trung cap) OR (tang cua)) tong cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: ho ((bien tinh) or (yen tinh)) - hanh ((trung cap) or (tang cua)) tong cong dan than cao*.