Perhaps you should try some spelling variations:
ban hanh » ban hang
mai hoi » mai khoi, lai hoi, mai doi
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
cam cuc » cam xuc, cham cuu, pham cuc
cuc ban » cua ban, cac ban, cuu ban
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
di cua » doi cua, de cua, do 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 sac ky nang ((mai hoi) OR (dai hoi)). hieu ve cam cuc ban hanh ((di cua) OR (dai cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((mai hoi) OR (dai hoi)). hieu ve cam cuc ban hanh ((di cua) or (dai cua)) te~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((mai hoi) OR (dai hoi)). hieu ve cam cuc ban hanh ((di cua) or (dai cua)) te*.