Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
cham xuc » cam xuc, chat xuc, cham soc
va hanh » van hanh, va danh, ban hanh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
dong ha » dong hoa, dong va, dong hoc
ky dong » ly dong, ky dang, ky cong
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
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 dong ha hoi. hieu va 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 dong ha hoi. hieu va 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 dong ha hoi. hieu va cham xuc ((va thanh) or (va hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky dong ha hoi. hieu va cham xuc ((va thanh) or (va hanh)) vi cua tre*.