Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
cua triet » cua viet, su triet, va triet
nham thuc » nhan thuc, nam thuc, nham thu
hoc sach » hoc sinh, hoc cac, hoc anh
thuc va » thuc vat, thuc dan, thuc day
va nham » va cham, va tham, va nha
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
v nang » va nang, vu nang, van nang
va dan » ca dan, va dao, va dau
dan de » dan den, dang de, van de
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. hieu va nham thuc va dan de ((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. hieu va nham thuc va dan de ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) v nang x hoi. hieu va nham thuc va dan de ((cua triet) or (cuu tre))*.