Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
lam xuc » cam xuc, lam duoc
vai nha » va nha, tai nha, mai nha
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
su sach » so sach, vu sach
van lam » van nam
nang o » nang co, nang ho, nang ro
o hoc » co hoc, mo hoc, so hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thu sach)) ky nang o hoc. hieu van lam xuc ((va danh) or (va dinh)) vai nha thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang o hoc. hieu van lam xuc ((va danh) OR (va dinh)) vai nha thuoc.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang o hoc. hieu van lam xuc ((va danh) or (va dinh)) vai nha thuoc*.