Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh sua » hinh su, hanh va, hanh tu
hanh cua » manh cua, hang cua, doanh cua
cam luc » cam xuc, cau luc
su sach » so sach, vu sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
sach v » sach va, sach y, sach 2
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc 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: su sach v ((nang xa) OR (nang ma)) hoi. hieu ve cam luc va ((hanh cua) OR (hanh sua)) cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v ((nang xa) OR (nang ma)) hoi. hieu ve cam luc va ((hanh cua) or (hanh sua)) cua viet~".
• Adding a wildcard symbol may retrieve word variants: su sach v ((nang xa) OR (nang ma)) hoi. hieu ve cam luc va ((hanh cua) or (hanh sua)) cua viet*.