Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
viet nhung » viet hung, biet nhung, viec nhung
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dinh viet » ninh viet, danh viet, trinh viet
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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 danh - hanh dinh viet nhung cong ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien danh - hanh dinh viet nhung cong ((dan toan) OR (dan than)) cau*.