Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
nham thuc » nhan thuc, nam thuc, nham thu
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
va triet » va thiet, va trien, ve triet
va nham » va cham, va tham, va nha
thuc va » thuc vat, thuc dan, thuc day
van va » van vat, van van, ban va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (thuat sach)) ky nang x hoi. lieu va nham thuc va doanh van va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat sach)) ky nang x hoi. lieu va nham thuc va doanh van va triet.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) ky nang x hoi. lieu va nham thuc va doanh van va triet*.