Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
tang mai » tang ma, tang tai, lang mai
cua tre » cua te, cuu tre, cua triet
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
di cua » dai cua, doi cua, de cua
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac
sac ky » sai ky
ve cam » ve cham, va cam, ve cai

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