Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
cua triet » cua viet, su triet, va triet
tham thuc » nham thuc, pham thuc, tam thuc
hoc sach » hoc sinh, hoc cac, hoc anh
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
dinh di » dinh du, dinh vi, danh di
cuu tre » cua tre, cau tren, cau treo
v nang » va nang, vu nang, van nang
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 (hoc sach)) v nang x hoi. lieu va tham thuc va dinh di ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) v nang x hoi. lieu va tham thuc va dinh di ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) v nang x hoi. lieu va tham thuc va dinh di ((cua triet) or (cuu tre))*.