Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
so sanh » do sanh
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
de cua » le cua, te cua, dieu cua

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 (so sanh)) y nang ma hoi. hieu va cac thuc va hanh ((vi cua) OR (de cua)) tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) y nang ma hoi. hieu va cac thuc va hanh ((vi cua) or (de cua)) tre*.