Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet
thanh van » thanh san, thanh toan, thanh phan
va thanh » gia thanh, ban thanh, va tinh
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
cam tu » cam thu, nam tu, dam tu
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: thuat sach tu nang ((x hoi) or (o hoc)). hieu va cam tu va thanh van ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach tu nang ((x hoi) OR (o hoc)). hieu va cam tu va thanh van ((cua triet) OR (va triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach tu nang ((x hoi) or (o hoc)). hieu va cam tu va thanh van ((cua triet) OR (va triet))*".