Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
tu sach » thu sach, su sach, te sach
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, xuc ban
vai cua » hai cua, lai cua, bai cua
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: tu sach y nang ((mai hoi) or (lai hoi)). hieu ve cam xuc van thanh ((vai cua) OR (dai cua)) duc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((mai hoi) OR (lai hoi)). hieu ve cam xuc van thanh ((vai cua) OR (dai cua)) duc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((mai hoi) or (lai hoi)). hieu ve cam xuc van thanh ((vai cua) OR (dai cua)) duc".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((mai hoi) or (lai hoi)). hieu ve cam xuc van thanh ((vai cua) OR (dai cua)) duc*.