Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, dieu hanh, hien hanh
thien anh » thien danh, tien anh, thien thanh
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
trinh tu » trinh ky, trinh do
tu nhung » tu chung, cua nhung, thi nhung
phan cau » phan dau, phan cac, phan tu

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 manh) or (thien anh))) or (hieu nganh)) - canh trinh tu nhung cong doan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu manh) OR (thien anh))) OR (hieu nganh)) - canh trinh tu nhung cong doan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) or (thien anh))) or (hieu nganh)) - canh trinh tu nhung cong doan phan cau*.