Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu
trung nam » trung tam, trung cap, trung ha
trong nam » thong nam, trong lam, trong cac
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: ((mot chieu) OR (ho chieu)) xanh - thanh ((trung nam) OR (trong nam)) nhung cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (ho chieu)) xanh - thanh ((trung nam) OR (trong nam)) nhung cong san toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (ho chieu)) xanh - thanh ((trung nam) OR (trong nam)) nhung cong san toan ban*.