Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cho hoc » co hoc, khoa hoc
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
te sach » toc sach
ly hang » ly quang
ty hang » thi hang, thu hang
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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 ((((ty hang) OR (ty xang))) or (ly hang)) cho hoc. hieu ve cac xuc van hanh vi cua cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((((ty hang) OR (ty xang))) OR (ly hang)) cho hoc. hieu ve cac xuc van hanh vi cua cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((((ty hang) OR (ty xang))) or (ly hang)) cho hoc. hieu ve cac xuc van hanh vi cua cac*".