Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
tham xuc » tham nuoc, tham thuc, pham duc
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
va tham » van tham, va cham, va thanh
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky tang xa hoi. hieu va tham xuc ((va danh) OR (va dinh)) vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) ky tang xa hoi. hieu va tham xuc ((va danh) OR (va dinh)) vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky tang xa hoi. hieu va tham xuc ((va danh) OR (va dinh)) vi cua triet*.