Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu quang - hanh trang cua dung ((cong san) OR (cong tac)) than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quang - hanh trang cua dung ((cong san) OR (cong tac)) than cap".
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - hanh trang cua dung ((cong san) OR (cong tac)) than cap*.