Perhaps you should try some spelling variations:
sach van » sach han, sach va, bach van
van nang » van quang, van ban, van dong
ba trung » tai trung, nam trung, do trung
trung va » truong va, trang va, trung ha
su triet » su viet, ve triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
su tien » su kien, su hien, tu tieng
ve ba » ve bao, ve ban, ve va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach van nang xa hoi. hieu ve ba trung va hanh va ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach van nang xa hoi. hieu ve ba trung va hanh va ((su triet) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: su sach van nang xa hoi. hieu ve ba trung va hanh va ((su triet) or (su tien))*.