Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
hanh luan » khanh luan, hang luan, hanh luat
dung cong » dung trong
theo chu » theo chieu, cho chu, theo yeu
chao chu » cho chu, cua chu, cao cho
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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: ((theo chu) OR (chao chu)) xanh - hanh luan van ((nhung tuong) OR (dung cong)) dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) OR (chao chu)) xanh - hanh luan van ((nhung tuong) or (dung cong)) dan than cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) OR (chao chu)) xanh - hanh luan van ((nhung tuong) or (dung cong)) dan than cau*.