Perhaps you should try some spelling variations:
cua triet » su triet, va triet
thanh van » thanh san, thanh toan, thanh phan
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
cua viet » ca viet, hoa viet, cua vat
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cam tuc » cam xuc, cam tu, nam thuc
ty nang » ky nang, ty xang, ty hang
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao
o hoc » co hoc, mo hoc, so hoc
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 ty nang ((x hoi) or (o hoc)). hieu va cam tuc va thanh van ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((x hoi) OR (o hoc)). hieu va cam tuc va thanh van ((cua triet) OR (cua viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((x hoi) or (o hoc)). hieu va cam tuc va thanh van ((cua triet) OR (cua viet))*".