Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang co » nang cao, nang doc, nang noi
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc day
van cua » vang cua, ban cua, dan cua
co hoi » co hoc, co loi
va am » va lam, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang co hoi. hieu va am ((thuc va) OR (thuc dan)) doanh van cua triet~.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang co hoi. hieu va am ((thuc va) or (thuc dan)) doanh van cua triet*.