Perhaps you should try some spelling variations:
quang dai » quang dam, quang hai, quang ngai
van quang » van quan, tran quang, van tuan
thu sach » tu sach, thuat sach, thuoc sach
cua nuoc » cua nguoi, cua thuoc, nha nuoc
cua quoc » cua thuoc
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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 (lai hoi)). hieu ve cam xuc van quang dai ((cua nuoc) or (cua quoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((mai hoi) OR (lai hoi)). hieu ve cam xuc van quang dai ((cua nuoc) OR (cua quoc)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((mai hoi) or (lai hoi)). hieu ve cam xuc van quang dai ((cua nuoc) or (cua quoc))*.