Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cham, thanh chu, thanh hai
trung hoc » trung quoc
thanh cha » thanh ha, thanh nha, thanh phan
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
trung ha » trung tam, trung cap
cong van » cong vang, cong san, song van

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 xanh - thanh ((trung ha) OR (trung hoc)) nhung cong van ((thanh chau) OR (thanh cha))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - thanh ((trung ha) or (trung hoc)) nhung cong van ((thanh chau) OR (thanh cha))~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - thanh ((trung ha) or (trung hoc)) nhung cong van ((thanh chau) OR (thanh cha))*.