Perhaps you should try some spelling variations:
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chat cua
hieu va » lieu va, hieu qua
mai hoi » mai khoi, lai hoi, mai doi
dai hoi » dai hoc, dai hai, dai moi
ky dang » ky nang, ky danh
vi cua » vai cua, di cua
tu van » tu va
cua tu » cua tuc, cua su, cua cu

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

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