Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
tuc ban » thuc ban, truc ban, tu ban
vai cua » dai cua, hai cua, lai cua
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (co sach)) ky nang xa hoi. hieu van cam tuc ban hanh ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ky nang xa hoi. hieu van cam tuc ban hanh ((vi cua) OR (vai cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (co sach)) ky nang xa hoi. hieu van cam tuc ban hanh ((vi cua) OR (vai cua)) triet*".