Perhaps you should try some spelling variations:
mai khoi » tai khoa, cac khoi, dai khoa
mai khoa » tai khoa, may khoa, dai khoa
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
di cua » dai cua, doi cua, de cua
xuc va » duc va, tuc va, luc va
vu sac » vu sach, vu san, va sac
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
ve cai » va cai, ve tai, ve cau

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: vu sac ky tang ((mai khoi) OR (mai khoa)). hieu ((ve cai) OR (ve cac)) xuc va danh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky tang ((mai khoi) OR (mai khoa)). hieu ((ve cai) or (ve cac)) xuc va danh di cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sac ky tang ((mai khoi) OR (mai khoa)). hieu ((ve cai) or (ve cac)) xuc va danh di cua tre*.