Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nam thuc » nam thuoc, am thuc, nam thu
vu sach » vu bach, su sach, vu khach
nang di » nang du, hang di, nang ji
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
thuc va » thuc vat, thuc dan, thuc day
va nang » van nang, da nang, cam nang
ve nam » he nam, va nam, le nam
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (thuoc sach)) ky lang xa hoi. hieu ve nam thuc va nang di ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (thuoc sach)) ky lang xa hoi. hieu ve nam thuc va nang di ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (thuoc sach)) ky lang xa hoi. hieu ve nam thuc va nang di ((cua tre) or (cua te))*.