Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung cap, dung cua
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: ho ((hieu manh) or (chieu sach)) - hanh ((trung cua) or (trung tuan)) nhung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - hanh ((trung cua) OR (trung tuan)) nhung cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - hanh ((trung cua) or (trung tuan)) nhung cong tan van ban*.