Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh tue » hanh tu, hanh tuyen, hanh theo
ban hanh » ban hang
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
tue cua » te cua
xuc ban » duc ban, cuc ban, quoc ban
ve cham » va cham, ve chat, vu cham
lai hoi » dai hoi, lai hoa, lai roi
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, mai doi
cua te » cua tu

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) or (thuoc sach)) ky nang ((mai hoi) OR (lai hoi)). hieu ve cham xuc ban hanh tue cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) ky nang ((mai hoi) OR (lai hoi)). hieu ve cham xuc ban hanh tue cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuoc sach)) ky nang ((mai hoi) OR (lai hoi)). hieu ve cham xuc ban hanh tue cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ky nang ((mai hoi) OR (lai hoi)). hieu ve cham xuc ban hanh tue cua te*.