Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
trung tuan » trung thanh, trung tam, tran tuan
truong cao » truong dai
phuong dan » phuong danh, phuong doan, huong dan
vien tinh » dien tinh, tien tinh, viec tinh
bien tinh » bi tinh, yen tinh, diep tinh
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((vien tinh) OR (bien tinh)) - thanh ((trung tuan) or (truong cao)) nhung phuong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien tinh) OR (bien tinh)) - thanh ((trung tuan) OR (truong cao)) nhung phuong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((vien tinh) OR (bien tinh)) - thanh ((trung tuan) or (truong cao)) nhung phuong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((vien tinh) OR (bien tinh)) - thanh ((trung tuan) or (truong cao)) nhung phuong dan toan cau*.