Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu nganh » vien nganh, hiem ngan, hieu manh
hieu quan » hieu qua, lieu quan, thien quan
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu nganh) or (hieu quan)) - hanh trang ((cua hang) or (cua dang)) cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (hieu quan)) - hanh trang ((cua hang) OR (cua dang)) cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (hieu quan)) - hanh trang ((cua hang) or (cua dang)) cong dan chan cau*.