Perhaps you should try some spelling variations:
anh thai » anh tai, nhanh thai, tranh thai
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, mai doi
anh thi » anh tho, dinh thi, dang thi
lai hoi » dai hoi, lai hoa, lai roi
hieu ve » hieu va, hieu van
cac dac » cac dan, cac dai, cac bac
su cac » tu cac, su cao, su can
dac va » duc va, day va, dat va
ve cac » va cac, vien cac

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: su cac ky nang ((mai hoi) OR (lai hoi)). hieu ve cac dac va ((anh thai) OR (anh thi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang ((mai hoi) or (lai hoi)). hieu ve cac dac va ((anh thai) OR (anh thi)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su cac ky nang ((mai hoi) or (lai hoi)). hieu ve cac dac va ((anh thai) OR (anh thi)) cua tre*.