Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
hieu cua » hieu qua, dieu cua, bieu cua
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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: hoc ((hieu cua) OR (chinh sach)) - hanh trung tuan ((nhung don) OR (hang cong)) dan than cap~.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu cua) or (chinh sach)) - hanh trung tuan ((nhung don) or (hang cong)) dan than cap*.