Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dang xay » dang van, van xay
ve triet » va trien
su triet » su viet, su tien
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh ve » hanh vi, hanh va, hanh kem
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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 dang xay hoi. hieu ve cam xuc va hanh ve ((ve triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky dang xay hoi. hieu ve cam xuc va hanh ve ((ve triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ky dang xay hoi. hieu ve cam xuc va hanh ve ((ve triet) or (su triet))*.