Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
soc ban » hoc ban, coc ban, so ban
vai cua » dai cua, hai cua, lai cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, ma hoa, me hoi
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 sac ky nang ((((ma hoi) or (xa hoi))) or (mai khoi)). hieu vu cham soc ban hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((((ma hoi) OR (xa hoi))) OR (mai khoi)). hieu vu cham soc ban hanh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((((ma hoi) or (xa hoi))) or (mai khoi)). hieu vu cham soc ban hanh vai cua tu*.