Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, te sach, tu cach
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
lap hai » lap tai, lap lai, lap hoat
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
su sach » so sach, vu sach
ve nam » he nam, va nam, le nam
vi cua » vai cua, di cua
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: ((tu sach) or (su sach)) ((ky tang) or (ky dang)) lap hai. hieu ve nam thuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ((ky tang) OR (ky dang)) lap hai. hieu ve nam thuc va danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ((ky tang) or (ky dang)) lap hai. hieu ve nam thuc va danh vi cua te*.