Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach uu
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
sach ty » sach y, sach thu, xach tay
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
ve cac » va cac, vien cac
ma hoi » mai hoi, ma hoa, me hoi

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) OR (sach tu)) nang ((ma hoi) or (xa hoi)). hieu ve cac xuc van hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) nang ((ma hoi) OR (xa hoi)). hieu ve cac xuc van hanh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach tu)) nang ((ma hoi) or (xa hoi)). hieu ve cac xuc van hanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach tu)) nang ((ma hoi) or (xa hoi)). hieu ve cac xuc van hanh vi cua tu*.