Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
qua cam » qua cham, qua cac, qua ca
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuat sach)) ky nang x hoi. hieu qua cam ((xuc va) or (thuc dan)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat sach)) ky nang x hoi. hieu qua cam ((xuc va) OR (thuc dan)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat sach)) ky nang x hoi. hieu qua cam ((xuc va) or (thuc dan)) hanh vi cua tre*.