Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tham xuc » tham nuoc, tham thuc, pham duc
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
xuc van » duc van, luc van, vuc van
ha hoi » hoa hoi, ha noi, xa hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky lang ha hoi. hieu va tham xuc van hanh vi ((cua te) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky lang ha hoi. hieu va tham xuc van hanh vi ((cua te) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ky lang ha hoi. hieu va tham xuc van hanh vi ((cua te) or (su triet))*.