Perhaps you should try some spelling variations:
nang lap » nang cap, sang lap, nang lam
nam thuc » nam thuoc, am thuc, nam thu
su sach » so sach
vu sach » vu bach, vu khach
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ve nam » he nam, va nam, le nam
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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) OR (vu sach)) ky nang lap hai. hieu ve nam thuc va danh vi cua tu~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang lap hai. hieu ve nam thuc va danh vi cua tu*.