Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
tieu xanh » tieu danh, chieu xanh, dieu hanh
nhu phong » nhu phuong, ngu phong, nhung phong
dung cua » dung luan, dung cho
phong va » thong va, phung van, thong van
nhan cau » nhanh cau, nhan sau, nhin cau
phan cau » phan dau, phan cac, phan tu

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 ((dung cua) OR (trung tuan)) nhu phong va ((nhan cau) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - thanh ((dung cua) or (trung tuan)) nhu phong va ((nhan cau) OR (phan cau))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - thanh ((dung cua) or (trung tuan)) nhu phong va ((nhan cau) OR (phan cau))*.