Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
vai cua » dai cua, hai cua, lai cua
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
cua duc » cua tuc, cua nuoc, cua quoc
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, v nang

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) OR (xuc ban)) thanh vai 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) OR (xuc ban)) thanh vai 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) OR (xuc ban)) thanh vai cua duc".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((mai hoi) or (lai hoi)). hieu ve cam ((xuc van) OR (xuc ban)) thanh vai cua duc*.