Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
khanh luan » khanh thuan, doanh luan, hang luan
hanh luan » hang luan, hanh luat, han luan
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
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 xanh - ((hanh luan) OR (khanh 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 xanh - ((hanh luan) OR (khanh luan)) van ((nhung tuong) or (dung cong)) dan than cau~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((hanh luan) OR (khanh luan)) van ((nhung tuong) or (dung cong)) dan than cau*.