Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nhung huong » nhung phuong, nhung tuong, nhung cong
hanh trung » thanh trung, hanh trang, manh trung
tam nhung » tham nhung, cam nhung, nam nhung
dan khan » dan khanh, dan chan, dan than
khan ap » khan cap, han ap, khan dam

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 (dieu hanh)) - hanh trung tam nhung huong dan khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (dieu hanh)) - hanh trung tam nhung huong dan khan ap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (dieu hanh)) - hanh trung tam nhung huong dan khan ap*.