Perhaps you should try some spelling variations:
cao truong » cac truong, cho truong, cau truong
lao truong » lap truong, lam truong, tao truong
hinh sinh » tinh sinh, hinh dinh, hinh kinh
theo chu » theo chieu, cho chu, chao chu
chu tinh » chau tinh, chua tinh, cuu tinh
cong san » cong tac
toan cao » toan tap
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: theo chu tinh - hinh sinh ((lao truong) OR (cao truong)) cong san ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu tinh - hinh sinh ((lao truong) OR (cao truong)) cong san ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chu tinh - hinh sinh ((lao truong) OR (cao truong)) cong san ((toan cao) or (toan ban))*.