Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, dai khoa
cac khoi » cac thoi, cac khoan, cach thoi
cham duc » pham duc, cham soc, pham duy
van hang » van khang, van hoang, van thang
hieu va » lieu va, hieu qua
va cham » va chat, va tham
duc van » duc va, duc tan, duc manh
hang vi » hang va, hanh vi, hang di
vi cua » vai cua, di 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 cac ky nang ((mai khoi) or (cac khoi)). hieu va cham duc van hang vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((mai khoi) OR (cac khoi)). hieu va cham duc van hang vi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((mai khoi) or (cac khoi)). hieu va cham duc van hang vi cua tu*.