Perhaps you should try some spelling variations:
khong tuong » khong xuong, khong trong, phong tuong
hieu manh » chieu xanh, hieu nganh, hien hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua khong » hua khong, cua phuong, cua thuong
manh toan » thanh toan, anh tuan, tinh toan
tinh cua » trinh cua, sinh cua, tinh chat
dan than » dan chan, ban than, van than

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 ((hieu manh) OR (dieu hanh)) - hanh tinh cua khong tuong ((dan than) OR (manh toan)) tap~.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - hanh tinh cua khong tuong ((dan than) or (manh toan)) tap*.