Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
nhung cong » dung cong, thong cong, hang cong
tran tuan » tran xuan, tran quang, tran thanh
chi xanh » chi anh, chi danh, chi hanh
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
doi chi » doi khi

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: doi chi xanh - thanh ((trung tuan) OR (tran tuan)) nhung cong dan ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - thanh ((trung tuan) OR (tran tuan)) nhung cong dan ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - thanh ((trung tuan) OR (tran tuan)) nhung cong dan ((toan cau) or (toan ban))*.