Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va tuyen » va truyen, tac tuyen, ke tuyen
cham xuc » cam xuc, chat xuc, cham soc
va trien » va truyen, va thiet, va tieng
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
te sach » toc sach
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
va cham » va chat, va tham
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: ((te sach) or (thuoc sach)) ky tang xa hoi. hieu va cham xuc va danh vi ((va trien) OR (va tuyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky tang xa hoi. hieu va cham xuc va danh vi ((va trien) OR (va tuyen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky tang xa hoi. hieu va cham xuc va danh vi ((va trien) OR (va tuyen))".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky tang xa hoi. hieu va cham xuc va danh vi ((va trien) OR (va tuyen))*.