Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
chieu xanh » chieu sach, chieu sang, chieu tinh
cua truong » xuan truong, cac truong, xa truong
hieu xanh » hieu manh, hieu nganh, dieu hanh
cua trung » xuan trung, cua nhung, ba trung
long tinh » cong tinh, trong tinh, luong tin
toan ban » van ban

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: doc ((hieu xanh) OR (chieu xanh)) - hanh doanh ((cua truong) OR (cua trung)) long tinh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - hanh doanh ((cua truong) or (cua trung)) long tinh toan ban~".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - hanh doanh ((cua truong) or (cua trung)) long tinh toan ban*.