Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
nhung cong » dung cong, thong cong, hang cong
hanh hinh » hanh chinh, hanh tinh, hanh dinh
cua nhung » va nhung
cong tran » cong tan, cong tuan, cong toan
giang man » giang van, giang mai, giang tan
giang san » giang van, giang son, gian dan
hinh cua » chinh cua, sinh cua, tinh cua

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 ((chieu xanh) OR (chieu sang)) - hanh hinh cua nhung cong tran ((giang man) OR (giang san))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sang)) - hanh hinh cua nhung cong tran ((giang man) OR (giang san))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - hanh hinh cua nhung cong tran ((giang man) OR (giang san))*.