Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
tuong lanh » thong lanh, tuong linh, thuong lang
lanh tuan » anh tuan, manh tuan, lanh xuan
tung tam » trung tam, vung tam, tuong tac
dung tam » duong tam, dung tai, dung lam
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien hanh) or (dieu hanh)) - thanh ((tung tam) OR (dung tam)) nhung tuong lanh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (dieu hanh)) - thanh ((tung tam) OR (dung tam)) nhung tuong lanh tuan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hanh) or (dieu hanh)) - thanh ((tung tam) OR (dung tam)) nhung tuong lanh tuan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (dieu hanh)) - thanh ((tung tam) OR (dung tam)) nhung tuong lanh tuan ban*.