Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
soc ban » coc ban, soc ba, soc dan
hoc ban » hoc bang, hoc dan, hoc bai
cua tre » cua te, cuu tre, cua triet
so ban » sao ban, so bang, co ban
vi cua » vai cua, di cua

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 cac ky nang mai hoi. hieu ve cham ((((soc ban) OR (so ban))) OR (hoc ban)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang mai hoi. hieu ve cham ((((soc ban) OR (so ban))) or (hoc ban)) hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang mai hoi. hieu ve cham ((((soc ban) OR (so ban))) or (hoc ban)) hanh vi cua tre*.