Perhaps you should try some spelling variations:
hoc duoc » hoc nuoc, hoa duoc, hoc dung
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
duoc va » nuoc va, duc va, duoc ma
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ve hoc » te hoc, va hoc, vi hoc

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