Perhaps you should try some spelling variations:
sach tri » sach tai, sach tren, sach truc
tri nang » thi nang, tra nang, tri bang
cham duc » pham duc, cham soc, pham duy
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
hien tu » khien tu, dien tu
tu cham » toc cham, thi cham
danh de » hanh de, dan de, dang de
dung de » dung he, dung dat

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 tri nang x ho. hien tu cham duc va ((danh de) OR (dung de)) su triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach tri nang x ho. hien tu cham duc va ((danh de) or (dung de)) su triet*.