Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cau treo » cau theo, cau tren, cau triet
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
dao lai » dao lam, dao bai, dao hai
cua tre » cuu tre, cua triet, dua tren
y lang » o lang, _ lang, tay lang
va dao » ca dao
cua te » cua tu

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: tu sach y lang xa hoi. hieu va cac nuoc va dao lai ((((cua tre) OR (cua te))) OR (cau treo))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y lang xa hoi. hieu va cac nuoc va dao lai ((((cua tre) OR (cua te))) or (cau treo))~".
• Adding a wildcard symbol may retrieve word variants: tu sach y lang xa hoi. hieu va cac nuoc va dao lai ((((cua tre) OR (cua te))) or (cau treo))*.