Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
truong cao » truong dai
nhung dong » nhung don, nhung cong, nhung dung
bang thanh » ban thanh, dang thanh, tang thanh
hien xanh » hien hanh, chieu xanh, hien khanh
trung cap » trung tam
dong bang » dong san
thanh hai » thanh phan, thanh hoa, thanh san

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 xanh) OR (hien nhanh)) - thanh ((trung cap) or (truong cao)) nhung dong bang thanh hai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh ((trung cap) OR (truong cao)) nhung dong bang thanh hai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - thanh ((trung cap) or (truong cao)) nhung dong bang thanh hai".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - thanh ((trung cap) or (truong cao)) nhung dong bang thanh hai*.