Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
mai khoi » mai khoa, tai khoa, cac khoi
cham xuc » cam xuc, chat xuc, cham soc
hieu ve » hieu va, hieu van
mai hoi » dai hoi, lai hoi, mai doi
va dinh » van dinh, va kinh, va tinh
vai cau » van cau, vai cac, lai chau
ve cham » va cham, ve chat, vu cham
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
va cau » van cau, va cac, va dau

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

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