Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
su triet » su viet, su tien, ve triet
tham xuc » tham nuoc, tham thuc, pham duc
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
va tham » van tham, va cham, va thanh
xuc va » duc va, tuc va, luc va

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 ma hoa. hieu va tham xuc va ((danh vi) OR (dinh vi)) su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) ky tang ma hoa. hieu va tham xuc va ((danh vi) OR (dinh vi)) su triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky tang ma hoa. hieu va tham xuc va ((danh vi) OR (dinh vi)) su triet*.