Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
nam thuy » nam thu, nam thuc, nam thue
thuy van » thuy san, thuc van, chu van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
van cau » van dau, van hau, van chat
y nang » ky nang, ly nang, v nang
va nam » van nam, ha nam, va nay
va cau » va cac, va dau, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu va nam thuy van doanh ((va cau) OR (van cau)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu va nam thuy van doanh ((va cau) OR (van cau)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu va nam thuy van doanh ((va cau) OR (van cau)) triet*.