Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tran » thanh trang, thanh toan, thanh tra
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
dung thanh » duong thanh, dang thanh, dung thang
dong thanh » truong thanh
hien xanh » hien hanh, hien nhanh, hien khanh
tran tuan » tran xuan, tran quang, tran thanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) OR (chieu xanh)) - thanh tran tuan thong cong ((dung thanh) or (dong thanh)) bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - thanh tran tuan thong cong ((dung thanh) OR (dong thanh)) bac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - thanh tran tuan thong cong ((dung thanh) or (dong thanh)) bac".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - thanh tran tuan thong cong ((dung thanh) or (dong thanh)) bac*.