Perhaps you should try some spelling variations:
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve hoc » te hoc, va hoc, vi hoc
nuoc » quoc, duoc, ngoc

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: te sach y nang ma hoi. hieu ve hoc nuoc va hanh vi ((cua tre) OR (cuu tre))~.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu ve hoc nuoc va hanh vi ((cua tre) or (cuu tre))*.