Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
trung cua » truong cua, trung cap, dung cua
van thanh » ban thanh, van tuan
dan than » dan chan, ban than, van than

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