Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
van nhanh » van thanh, van hanh, van khanh
so sach » so sanh, bo sach, co sach
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu van
hieu va » lieu va, hieu qua
xu van » tu van, vu van, su van
cua te » cua tu
o lang » hoa lang, hoi lang

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((_ lang) OR (o lang)) xa hoi. ((hieu ve) OR (hieu va)) chao xu van nhanh hai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((_ lang) or (o lang)) xa hoi. ((hieu ve) OR (hieu va)) chao xu van nhanh hai cua te~".
• Adding a wildcard symbol may retrieve word variants: so sach ((_ lang) or (o lang)) xa hoi. ((hieu ve) OR (hieu va)) chao xu van nhanh hai cua te*.