Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
cua quoc » cua nuoc, cua thuoc
thu sach » thuat sach, thuoc sach, thu hoach
hang tai » hang va, dung tai
thanh vi » hanh vi, thanh va, thanh ve
xuc van » duc van, luc van, vuc van
tu sach » su sach, te sach, tu cach
cao xuc » cam xuc, cao duc, cao suc
hieu va » lieu va, hieu qua
tai hoi » tai khoi, dai hoi, tai hai
y hang » ly hang, ty hang, yu hang
va cao » va cac, va co, va dao

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)) y hang tai hoi. hieu va cao xuc van ((thanh vi) or (thanh van)) cua quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y hang tai hoi. hieu va cao xuc van ((thanh vi) OR (thanh van)) cua quoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y hang tai hoi. hieu va cao xuc van ((thanh vi) or (thanh van)) cua quoc*.