Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
hoc anh » hoc nganh, hoc nhanh, ngoc anh
ty tang » tay tang, ty xang, ty hang
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
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 cua » vai cua, di cua
cua su » qua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (((hoc sach) or (hoc anh)))) ty tang ma hoi. hieu va cac xuc van hanh vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (((hoc sach) OR (hoc anh)))) ty tang ma hoi. hieu va cac xuc van hanh vi cua su.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (((hoc sach) or (hoc anh)))) ty tang ma hoi. hieu va cac xuc van hanh vi cua su*.