Perhaps you should try some spelling variations:
cuon sach » duong sach, cuoc cach, co sach
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
ve nham » ve nha, ve cham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
x hoi » xa hoi, o hoi, x ho
thiet » thieu

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) or (cuon sach)) ky nang x hoi. hieu ve nham thuc va hanh vi ((cua triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (cuon sach)) ky nang x hoi. hieu ve nham thuc va hanh vi ((cua triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (cuon sach)) ky nang x hoi. hieu ve nham thuc va hanh vi ((cua triet) or (va thiet))*.