Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
hanh trinh » canh tranh
nhung cong » dung cong, thong cong, hang cong
doan tran » doan trang, doan tuan, hoan tran
he nhung » hee nhung, ve nhung, me nhung
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: doan tran thanh - ((hanh trinh) OR (hanh chinh)) he nhung cong ((dan toan) OR (dan than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan tran thanh - ((hanh trinh) OR (hanh chinh)) he nhung cong ((dan toan) or (dan than)) cau~".
• Adding a wildcard symbol may retrieve word variants: doan tran thanh - ((hanh trinh) OR (hanh chinh)) he nhung cong ((dan toan) or (dan than)) cau*.