Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
minh trang » tinh trang, minh hoang, minh tuan
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, hien khanh
cua nhung » va nhung
cong luan » tong luan, cong tuan, dong luan

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)) - ((minh trang) or (canh tranh)) cua nhung cong luan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - ((minh trang) OR (canh tranh)) cua nhung cong luan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - ((minh trang) or (canh tranh)) cua nhung cong luan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - ((minh trang) or (canh tranh)) cua nhung cong luan van ban*.