Perhaps you should try some spelling variations:
ban hanh » ban hang
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
dai hoi » dai hoc, dai hai, dai moi
va chat » van chat, cao chat, hoa chat
xuc ban » duc ban, cuc ban, quoc ban
vi cua » vai cua, di cua
cua te » cua tu

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

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