Perhaps you should try some spelling variations:
chung cuong » hung cuong, chuong duong, hung vuong
luan chung » luan chinh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
danh toan » anh toan, dan toan, dang toan
manh toan » thanh toan, anh tuan, tinh toan
ho hieu » ho chieu, hoi hieu, nho hieu

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: ho hieu lang - ((hanh tang) OR (hanh mang)) luan chung cuong ((danh toan) OR (manh toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh tang) or (hanh mang)) luan chung cuong ((danh toan) OR (manh toan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh tang) or (hanh mang)) luan chung cuong ((danh toan) OR (manh toan)) cao*.