Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach thu, xach tay
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cao hoc » co hoc, cho hoc, chat hoc
sach uu » sach luu, sach xu, sach dau
sach tu » sach thu, cach tu, sach xu
cua cau » cua cac, cua chu, cua cay
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: hoc ((sach ty) or (((sach tu) OR (sach uu)))) nang cao hoc. hieu ve cac xuc van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sach ty) OR (((sach tu) OR (sach uu)))) nang cao hoc. hieu ve cac xuc van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((sach ty) or (((sach tu) OR (sach uu)))) nang cao hoc. hieu ve cac xuc van hanh vi cua cau*".