Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hieu manh » chieu xanh, hieu nganh, hien hanh
tran tuan » tran xuan, tran quang, tran thanh
tuan hang » tuan hoang, tuan bang, tuan dang
hang cong » dang cong, hang nong, bang cong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) OR (dieu hanh)) - thanh tran tuan hang cong tan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - thanh tran tuan hang cong tan van ban*".