Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cao xuc » cam xuc, cao duc, cao suc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky danh » ky anh
ky dang » ky nang
di cua » dai cua, doi cua, de cua
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((ky dang) OR (ky danh)) hoa hoi. hieu va cao xuc ((va hanh) or (va danh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((ky dang) OR (ky danh)) hoa hoi. hieu va cao xuc ((va hanh) OR (va danh)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((ky dang) OR (ky danh)) hoa hoi. hieu va cao xuc ((va hanh) or (va danh)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((ky dang) OR (ky danh)) hoa hoi. hieu va cao xuc ((va hanh) or (va danh)) di cua tre*.