Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
thanh di » thanh doi, thanh de, thanh do
cua nuoc » cua quoc, cua nguoi, cua thuoc
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
xuc van » duc van, luc van, vuc van
v nang » va nang, vu nang, van nang
va cao » va cac, va co, va dao
di cua » dai cua, doi cua, de cua

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) or (thu hoach)) v nang mai hoi. hieu va cao xuc van thanh di cua nuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thu hoach)) v nang mai hoi. hieu va cao xuc van thanh di cua nuoc.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thu hoach)) v nang mai hoi. hieu va cao xuc van thanh di cua nuoc*.