Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nhung huong » nhung phuong, nhung tuong, nhung cong
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trung » thanh trung, hanh trang, manh trung
trung dam » trung tam, trung dai, trong dam
dam nhung » cam nhung, nam nhung, dam khung
dan khan » dan khanh, dan than, dan khai
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) or (hieu nganh)) - hanh trung dam nhung huong ((dan khan) OR (dan chan)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (hieu nganh)) - hanh trung dam nhung huong ((dan khan) OR (dan chan)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) or (hieu nganh)) - hanh trung dam nhung huong ((dan khan) OR (dan chan)) cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (hieu nganh)) - hanh trung dam nhung huong ((dan khan) OR (dan chan)) cap*.