Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trang » thanh trung, canh tranh, hanh trinh
dong huong » dong thuong, dong duong, cong huong
phuc dong » phu dong, phuc khong, phuc trong
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 (dieu hanh)) - hanh trang phuc dong huong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (dieu hanh)) - hanh trang phuc dong huong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (dieu hanh)) - hanh trang phuc dong huong dan than cau*.