Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
kho tang » cao tang
qua tham » qua cham, qua than, qua thanh
tham soc » cham soc, tham nuoc, thai son
cua tre » cua te, cuu tre, cua triet
soc ban » hoc ban, coc ban, so ban
ky dang » ky nang, ky danh
ky tang » ky nang, ky trong, tay tang
vi cua » vai cua, di cua
te cac » tu cac, ve cac, te cao
ha hoi » hoa hoi, ha noi, xa hoi

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: te cac ((((ky tang) OR (ky dang))) OR (kho tang)) ha hoi. hieu qua tham soc ban thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ((((ky tang) OR (ky dang))) or (kho tang)) ha hoi. hieu qua tham soc ban thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te cac ((((ky tang) OR (ky dang))) or (kho tang)) ha hoi. hieu qua tham soc ban thanh vi cua tre*.