Perhaps you should try some spelling variations:
su sach » so sach, vu sach
va tinh » may tinh
cua tre » cuu tre, cua triet, dua tren
va dinh » van dinh, va kinh, vu dinh
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
lang xa » lang ha, dang xay, lang van
y lang » o lang, _ lang, tay lang
ve cam » ve cham, ve cac, va cam
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: su sach y lang xa hoi. hieu ve cam tuc ((va dinh) OR (va tinh)) tai ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y lang xa hoi. hieu ve cam tuc ((va dinh) OR (va tinh)) tai ((cua tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: su sach y lang xa hoi. hieu ve cam tuc ((va dinh) OR (va tinh)) tai ((cua tre) or (cua te))*.