Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham duc » pham duc, cham soc, pham duy
hieu tuc » hieu thuc, hieu luc, hieu thuoc
thi nang » thi cong, ki nang, thi hanh
tri nang » tra nang, tri bang, tri mang
su triet » su viet, su tien, ve triet
hien tu » khien tu, dien tu
va danh » va dinh, va dan, va hanh
danh de » hanh de, dan de, dang de
x hoi » xa hoi, o hoi, x ho
de su » den su, ve su, de tu

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: thu sach ((tri nang) OR (thi nang)) x hoi. ((hieu tuc) OR (hien tu)) cham duc va danh de su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((tri nang) OR (thi nang)) x hoi. ((hieu tuc) or (hien tu)) cham duc va danh de su triet~".
• Adding a wildcard symbol may retrieve word variants: thu sach ((tri nang) OR (thi nang)) x hoi. ((hieu tuc) or (hien tu)) cham duc va danh de su triet*.