Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien dang » thien bang, thien danh, thien nang
nhung cong » dung cong, thong cong, hang cong
tien anh » tieng anh, tien manh, dien anh
trung va » truong va, trang va, trung ha
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien anh) or (thien dang)) - thanh trung va nhung cong ((dan than) or (dan chan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (thien dang)) - thanh trung va nhung cong ((dan than) OR (dan chan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien anh) or (thien dang)) - thanh trung va nhung cong ((dan than) or (dan chan)) cao*.