Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
thu sach » tu sach, thuat sach, thuoc sach
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve ban » te ban, va ban, ve bao
bo van » vo van, do van, ho van
so van » su van, vo van
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x hoi. hieu ve ban ((bo van) OR (so van)) hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. hieu ve ban ((bo van) OR (so van)) hanh vi ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x hoi. hieu ve ban ((bo van) OR (so van)) hanh vi ((cua triet) or (su triet))*".