Perhaps you should try some spelling variations:
ban nhanh » ban hanh, ban thanh, nhan nhanh
kho tang » cao tang
ban nhan » ban than, van nhan, ban thanh
sanh kho » sinh khoa, sinh khoi, xanh khoa
so sanh » do sanh
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
tang xa » trang xa, tang ma, lang xa
su viet » so viet
hoa su » hoa lu, hoa si, hoa du

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: so sanh kho tang xa hoi. hieu ((ve cham) OR (ve chat)) tuc ((ban nhanh) OR (ban nhan)) hoa su viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh kho tang xa hoi. hieu ((ve cham) or (ve chat)) tuc ((ban nhanh) OR (ban nhan)) hoa su viet~".
• Adding a wildcard symbol may retrieve word variants: so sanh kho tang xa hoi. hieu ((ve cham) or (ve chat)) tuc ((ban nhanh) OR (ban nhan)) hoa su viet*.