Perhaps you should try some spelling variations:
sach chu » sach che, sach thu, sach thue
chu bang » thu bang, chuc nang, chu quang
van hanh » van thanh, ban hanh, van anh
hoc viet » hoc hien
tu sach » thu sach, su sach, te sach
bang ma » bang may, tang ma, ban ma
hieu va » lieu va
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
ma hoi » mai hoi, xa hoi, ma hoa
vi hoc » li hoc, va 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: tu sach chu bang ma hoi. ((hieu va) OR (hieu qua)) cac xuc van hanh vi hoc viet~.
• Adding a wildcard symbol may retrieve word variants: tu sach chu bang ma hoi. ((hieu va) or (hieu qua)) cac xuc van hanh vi hoc viet*.