Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuoc sach, thu hoach
cau thuc » cau truc, cuu thuc, can thuc
danh tai » doanh tai, dinh tai, hanh tai
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
tai cua » thai cua, tai cuc, tri cua
v nang » va nang, vu nang, van nang
va cau » van cau, va cac, va dau

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) OR (thuat sach)) v nang x ho. lieu va cau thuc va danh tai cua triet~.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) v nang x ho. lieu va cau thuc va danh tai cua triet*.