Perhaps you should try some spelling variations:
vat doanh » van doanh, vay doanh, va doanh
doanh van » doan van, doanh va, doanh ban
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
van cua » vang cua, ban cua, dan cua
co hoi » co hoc
va am » va lam, va cam

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach tu nang ((co hoi) OR (co loi)). hieu va am thuc vat doanh van cua triet~".
• Adding a wildcard symbol may retrieve word variants: thu sach tu nang ((co hoi) OR (co loi)). hieu va am thuc vat doanh van cua triet*.