Perhaps you should try some spelling variations:
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
ban thanh » ban hanh, ban hang
tham soc » cham soc, thai son, ham so
thanh vi » hanh vi, thanh va, thanh ve
nang hoa » nang hoat, hang hoa, nang hoc
cua tre » cua te, cuu tre, cua triet
hoa hoi » khoa hoi, hoa hoc, hoa doi
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cao) or (te bao)) ky nang hoa hoi. hieu qua ((tham soc) OR (tham nuoc)) ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cao) OR (te bao)) ky nang hoa hoi. hieu qua ((tham soc) OR (tham nuoc)) ban thanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cao) or (te bao)) ky nang hoa hoi. hieu qua ((tham soc) OR (tham nuoc)) ban thanh vi cua tre*".