Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
hanh vai » hanh vi, hanh va, hanh tai
dai moi » doi moi
ky sang » ky nang, ky dang, ky tang
lai hoi » lai hoa, lai roi, mai hoi
vai cua » dai cua, hai cua, lai cua
dai hoi » dai hoc, dai hai
va hanh » van hanh, va thanh, va danh
hieu su » hieu sau, tieu su, hieu so
su chat » su phat, du chat, so chat
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
cua te » cua tu

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 san ky sang ((lai hoi) OR (((dai hoi) OR (dai moi)))). hieu su chat duc va hanh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky sang ((lai hoi) or (((dai hoi) OR (dai moi)))). hieu su chat duc va hanh vai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu san ky sang ((lai hoi) or (((dai hoi) OR (dai moi)))). hieu su chat duc va hanh vai cua te*.