Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
thuoc va » thuc va, thuoc ma, thuong va
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va hanh » van hanh, va thanh, va danh
vi cau » va cau, ve cau, di cau
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. ((hieu van) OR (thien van)) nam thuoc va hanh vi cau tren~.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. ((hieu van) or (thien van)) nam thuoc va hanh vi cau tren*.