Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
toc sach » hoc sach, doc sach, thuoc sach
hanh dai » hanh tai, hanh dao, vanh dai
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
thi van » thi lan, thi hanh, thi nang
nam xuc » cam xuc, nam xua, nam thuc
va hanh » van hanh, va thanh, va danh
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc 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 xa hoi. ((thien van) OR (thi van)) nam xuc 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 xa hoi. ((thien van) OR (thi van)) nam xuc 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 xa hoi. ((thien van) OR (thi van)) nam xuc va hanh dai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (toc sach)) ky lang xa hoi. ((thien van) OR (thi van)) nam xuc va hanh dai cuu tre*.