Perhaps you should try some spelling variations:
cao thue » cho thue, cao thu, cao thuoc
sang tai » hang tai, sang tao, tang tai
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
thue va » thuc va, thuyet va, thuc vat
va sang » van sang, vua sang, va nang
tai cua » thai cua, tai cuc, tri cua
y nang » ky nang, ly nang, v nang
va cao » va cac, va co, va dao
cua te » cua tu
5 hoi » o hoi

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 ((5 hoi) or (xa hoi)). hieu va cao thue va sang tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((5 hoi) OR (xa hoi)). hieu va cao thue va sang tai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((5 hoi) or (xa hoi)). hieu va cao thue va sang tai cua te*.