Perhaps you should try some spelling variations:
ban hanh » ban hang
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
cac duc » cac du, cao duc, cac dac
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
vi cua » di cua
tuan » quan, tran, luan

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 y nang xa hoi. lieu va cac duc ((ban hanh) or (tuan anh)) ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. lieu va cac duc ((ban hanh) OR (tuan anh)) ((vi cua) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. lieu va cac duc ((ban hanh) or (tuan anh)) ((vi cua) OR (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. lieu va cac duc ((ban hanh) or (tuan anh)) ((vi cua) OR (vai cua)) triet*.