Perhaps you should try some spelling variations:
quang tuan » quang thanh, quan luan, quang cua
trung cong » truong cong, trong cong, trung uong
hien xanh » hien hanh, hien nhanh, chieu xanh
tung tuan » trung tuan, hung tuan, trang tuan
cong ban » cong bang, cong san, cong tan
phan cau » phan dau, phan cac, phan lap

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: hoc hien xanh - thanh ((tung tuan) OR (quang tuan)) trung cong ban ((phan cau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - thanh ((tung tuan) or (quang tuan)) trung cong ban ((phan cau) OR (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh ((tung tuan) or (quang tuan)) trung cong ban ((phan cau) OR (phan tu))*.