Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van hanh » van thanh, ban hanh, van anh
dang van » hoang van, hang va
te sach » toc sach
cau xuc » cam xuc, cau luc, cau truc
tai cua » thai cua, tai cuc, tri cua
va hanh » va thanh, va danh, ban hanh
hieu va » lieu va, hieu qua
van hoc » van hoa
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
va cau » van cau, va cac, va dau

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 (thuoc sach)) ky dang van hoc. hieu va cau xuc ((va hanh) OR (van hanh)) tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky dang van hoc. hieu va cau xuc ((va hanh) OR (van hanh)) tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky dang van hoc. hieu va cau xuc ((va hanh) OR (van hanh)) tai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky dang van hoc. hieu va cau xuc ((va hanh) OR (van hanh)) tai cua tre*.