Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
va triet » va thiet, va trien, ve triet
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
cac tac » cac toc, cac bac, cac dac
tac va » tac da, tac xa, tuc va
o hoc » co hoc, mo hoc, so hoc
va va » va van, va vua, va vai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach tu nang ((o hoc) or (xa hoi)). hieu viec cac tac va thanh va va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach tu nang ((o hoc) OR (xa hoi)). hieu viec cac tac va thanh va va triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach tu nang ((o hoc) or (xa hoi)). hieu viec cac tac va thanh va va triet*.