Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung luong » hung luong, nhung huong, nhung tuong
vien nganh » vien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
tai toan » tap toan, tai tuan, tam toan
bai toan » bai 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 nganh) or (hieu manh)) - thanh trung cua nhung luong ((tai toan) OR (bai toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien nganh) OR (hieu manh)) - thanh trung cua nhung luong ((tai toan) OR (bai toan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((vien nganh) or (hieu manh)) - thanh trung cua nhung luong ((tai toan) OR (bai toan)) cau*".