Perhaps you should try some spelling variations:
cuon sach » duong sach, cuoc cach, co sach
ban thanh » ban hanh, ban hang
trung ban » trong ban, trung van, trung can
thanh te » thanh ve, thanh de, thanh le
va triet » va thiet, va trien, ve triet
sach vu » sach va, sach tu, sach uu
va cham » va chat, va tham
vu nang » vuc nang, va nang, vu dang
ve cam » ve cham, ve cac, ve cai
va cam » va cac, va cao, va cai
x hoi » xa hoi, o hoi, x ho
te va » tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: cuon sach vu nang x hoi. hieu ((ve cam) or (((va cam) OR (va cham)))) trung ban thanh te va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cuon sach vu nang x hoi. hieu ((ve cam) OR (((va cam) OR (va cham)))) trung ban thanh te va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cuon sach vu nang x hoi. hieu ((ve cam) or (((va cam) OR (va cham)))) trung ban thanh te va triet".
• Adding a wildcard symbol may retrieve word variants: cuon sach vu nang x hoi. hieu ((ve cam) or (((va cam) OR (va cham)))) trung ban thanh te va triet*.