Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
qua tham » qua cham, qua than, qua thanh
thanh vi » hanh vi, thanh va, thanh ve
tham soc » cham soc, tham nuoc, thai son
tang ha » lang ha, trung ha, tang van
cua tre » cuu tre, cua triet, dua tren
tang ma » mang may, tang van
soc ban » hoc ban, coc ban, so ban
te cac » tu cac, ve cac, te cao
cua te » cua tu

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