Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
hang hoa » hang khoa, thanh hoa, hang va
cham xuc » cam xuc, chat xuc, cham soc
va hanh » van hanh, va danh, ban hanh
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky hang » ky nang, ly hang, ky dang
cua tre » cua te, cuu tre, cua triet
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 sach) OR (toc sach)) ky hang hoa hoi. hieu qua cham xuc ((va thanh) or (va hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky hang hoa hoi. hieu qua cham xuc ((va thanh) OR (va hanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky hang hoa hoi. hieu qua cham xuc ((va thanh) or (va hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky hang hoa hoi. hieu qua cham xuc ((va thanh) or (va hanh)) vi cua tre*.