Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, nhung don
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
hang cong » dang cong, hang nong, bang cong
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (hieu lang)) - hanh trung cua ((nhung cong) or (hang cong)) van tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (hieu lang)) - hanh trung cua ((nhung cong) OR (hang cong)) van tan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hieu lang)) - hanh trung cua ((nhung cong) or (hang cong)) van tan cau*.