Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
nay thuc » nam thuc, cay thuc, nhan thuc
hoc sach » hoc sinh, hoc cac, hoc anh
day thuc » dan thuc, cay thuc, dai thuc
tai cuu » tai cuc, tai buu, tai cua
dan tai » van tai, dan thi, han tai
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ca dan » cac dan, ca dao

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)) ky lang xa hoi. hieu va ((nay thuc) or (day thuc)) ca dan tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) ky lang xa hoi. hieu va ((nay thuc) OR (day thuc)) ca dan tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) ky lang xa hoi. hieu va ((nay thuc) or (day thuc)) ca dan tai cuu tre*.