Perhaps you should try some spelling variations:
ve cham » va cham, ve chat, vu cham
vu kham » vu khanh
va hanh » van hanh, va thanh, va danh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
vi va » vi van, vai va, vu va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang ((ma hoi) or (xa hoi)). hieu ((ve cham) or (vu kham)) xuc va hanh vi va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ((ma hoi) OR (xa hoi)). hieu ((ve cham) OR (vu kham)) xuc va hanh vi va thiet.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang ((ma hoi) or (xa hoi)). hieu ((ve cham) or (vu kham)) xuc va hanh vi va thiet*.