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