Perhaps you should try some spelling variations:
tinh viet » trinh viet, ninh viet, dinh viet
sach ty » sach tu, sach thu, xach tay
cua tre » cua te, cua triet, dua tren
va tinh » may tinh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
cuu tre » cau tren, cau treo
soc va » hoc va, loc va, doc va

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: toc ((sach ty) OR (sach y)) lang xa hoi. hieu ve cham soc va tinh viet ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ty) OR (sach y)) lang xa hoi. hieu ve cham soc va tinh viet ((cua tre) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) OR (sach y)) lang xa hoi. hieu ve cham soc va tinh viet ((cua tre) or (cuu tre))*.