Perhaps you should try some spelling variations:
nhung song » nhung cong, nhung bong, nhung chong
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
song luan » tong luan, cong luan, dong luan
tinh bai » tinh bac, hinh bai, tinh bao
tinh hai » tinh thai, tinh chat, trinh han
van cau » van dau, van hau, van chat

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 (hien hanh)) - canh ((tinh bai) or (tinh hai)) nhung song luan van cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - canh ((tinh bai) OR (tinh hai)) nhung song luan van cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - canh ((tinh bai) or (tinh hai)) nhung song luan van cau*.