Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » anh tang, hanh mang, hanh tung
cua nhung » va nhung
cong ban » cong bang, cong san, cong tan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac
ho hieu » ho chieu, hoi hieu, nho hieu

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: ho hieu lang - ((hanh tang) OR (hanh trang)) cua nhung cong ban ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh tang) or (hanh trang)) cua nhung cong ban ((than cau) OR (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh tang) or (hanh trang)) cua nhung cong ban ((than cau) OR (than cap))*.