Perhaps you should try some spelling variations:
ban hanh » ban hang
van cam » van lam, van cau, van dam
xuc ban » duc ban, cuc ban, quoc ban
hanh di » hanh vi, hanh de, hang di
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
ma hoi » mai hoi, ma hoa, me hoi
di cua » dai cua, doi cua, de cua
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 cai ky nang ((ma hoi) OR (xa hoi)). hieu ((van cam) or (van nam)) xuc ban hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang ((ma hoi) OR (xa hoi)). hieu ((van cam) OR (van nam)) xuc ban hanh di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky nang ((ma hoi) OR (xa hoi)). hieu ((van cam) or (van nam)) xuc ban hanh di cua tu".
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang ((ma hoi) OR (xa hoi)). hieu ((van cam) or (van nam)) xuc ban hanh di cua tu*.