Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
hoc sach » hoc sinh, hoc cac, hoc anh
danh sai » dung sai, danh bat, danh dau
va trien » va truyen, va thiet, va tieng
va tuyen » va truyen, tac tuyen, ke tuyen
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky lang xa hoi. hieu ve phan thuc va danh sai ((va trien) or (va tuyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky lang xa hoi. hieu ve phan thuc va danh sai ((va trien) OR (va tuyen)).
• Adding a wildcard symbol may retrieve word variants: hoc sach ky lang xa hoi. hieu ve phan thuc va danh sai ((va trien) or (va tuyen))*.