Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, thanh hang
cong danh » cuong danh, cong thanh, cong khanh
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
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 mang) OR (nhanh lang)) cua dung ((cong danh) OR (cong dan)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh mang) or (nhanh lang)) cua dung ((cong danh) OR (cong dan)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh mang) or (nhanh lang)) cua dung ((cong danh) OR (cong dan)) toan tap*.