Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh vien » nhan vien, thanh van
va thanh » gia thanh, ban thanh, va tinh
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
va cao » va cac, va co, va dao
cua tu » cua tuc, cua su, cua cu
x hoi » o hoi, x ho, 5 hoi

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 ly nang ((x hoi) or (xa hoi)). hieu va cao duc va thanh vien ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ly nang ((x hoi) OR (xa hoi)). hieu va cao duc va thanh vien ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: thuoc sach ly nang ((x hoi) or (xa hoi)). hieu va cao duc va thanh vien ((cua te) or (cua tu))*.