Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
hanh tranh » hanh trinh, hanh trang, nhanh thanh
lanh tranh » lan tranh, hanh trinh, sach tranh
duong vanh » duong van, duong manh, duong xanh
hien xanh » hien hanh, hien nhanh, chieu xanh
cua nhung » va nhung
vanh luan » van luan, doanh luan, tranh luan
luan ban » luan van, luan san, luan han

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