Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thieu xanh » chieu xanh, hieu manh, thien anh
tong tuong » trong tuong, tuong tuong, tong thuong
hanh sinh » hanh tinh, hanh dinh, hinh sinh
van thanh » ban thanh, van tuan
sinh cua » manh cua, dinh cuu, sinh va
cua tong » cua cong, cua dong, cua nong
van toan » van tuan, van tan, manh toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien thanh)) - hanh sinh cua tong tuong ((van toan) OR (van thanh)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien thanh)) - hanh sinh cua tong tuong ((van toan) OR (van thanh)) ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien thanh)) - hanh sinh cua tong tuong ((van toan) OR (van thanh)) ban*.