Perhaps you should try some spelling variations:
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chao xu
hieu ve » hieu va, hieu van
xuc ban » duc ban, cuc ban, quoc ban
mai hoi » mai khoi, dai hoi, lai hoi
lai roi » lai hoi, loi roi
ve chat » va chat, van chat
di cua » dai cua, doi cua, de cua
vi cua » vai cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((mai hoi) or (lai roi)). hieu ve chat xuc ban hanh ((vi cua) OR (di cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((mai hoi) OR (lai roi)). hieu ve chat xuc ban hanh ((vi cua) OR (di cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((mai hoi) or (lai roi)). hieu ve chat xuc ban hanh ((vi cua) OR (di cua)) tu".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((mai hoi) or (lai roi)). hieu ve chat xuc ban hanh ((vi cua) OR (di cua)) tu*.