Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien thanh » tien thanh, thi thanh, hien hanh
thien danh » thien anh, thien dang, thien chanh
nhung cong » dung cong, thong cong, hang cong
trung va » truong va, trang va, trung ha
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: hoc ((thien thanh) or (thien danh)) - thanh trung va nhung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (thien danh)) - thanh trung va nhung cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (thien danh)) - thanh trung va nhung cong dan than cao*.