Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
va thieu » va thiet, va hieu, van hieu
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
va tieu » van tieu, vay tieu, va dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ((mai hoi) OR (dai hoi)). hieu ve cham xuc van hanh vai ((va thieu) or (va tieu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((mai hoi) OR (dai hoi)). hieu ve cham xuc van hanh vai ((va thieu) OR (va tieu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((mai hoi) OR (dai hoi)). hieu ve cham xuc van hanh vai ((va thieu) or (va tieu))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((mai hoi) OR (dai hoi)). hieu ve cham xuc van hanh vai ((va thieu) or (va tieu))*.