Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
lang van » dang van, tang van, hoang van
hanh dai » hanh tai, hanh dao, vanh dai
ky lang » ky nang, ky dang, ky tang
van hoe » van hoa, van hoc, van hieu
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sach) or (toc sach)) ky lang van hoe. thien van nam ((xuc va) OR (luc va)) hanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (toc sach)) ky lang van hoe. thien van nam ((xuc va) OR (luc va)) hanh dai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (toc sach)) ky lang van hoe. thien van nam ((xuc va) OR (luc va)) hanh dai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (toc sach)) ky lang van hoe. thien van nam ((xuc va) OR (luc va)) hanh dai cuu tre*.