Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
cua quoc » cua nuoc, cua thuoc
thu sach » thuat sach, thuoc sach, thu hoach
lang dai » lang hai, lang mai, lang chai
vai cua » dai cua, hai cua, lai cua
xuc ban » duc ban, cuc ban, quoc ban
tu sach » su sach, te sach, tu cach
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
o lang » hoa lang, hoi lang

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 (thu sach)) o lang dai hoi. ((hieu ve) or (hieu qua)) cam xuc ban thanh vai cua quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) o lang dai hoi. ((hieu ve) OR (hieu qua)) cam xuc ban thanh vai cua quoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) o lang dai hoi. ((hieu ve) or (hieu qua)) cam xuc ban thanh vai cua quoc*.