Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh de » hanh de, dang de, danh di
cau luc » cau truc, cau phuc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach va » sach xa, sach ha, sach dao
sach v » sach y, sach 2, sach vay
luc va » duc va, tuc va, loc va
dan de » dan den, dang de, van de
va cau » van cau, va cac, va dau

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 v) OR (sach va)) nang xa hoi. hieu va cau luc va ((danh de) OR (dan de)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach v) OR (sach va)) nang xa hoi. hieu va cau luc va ((danh de) or (dan de)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) OR (sach va)) nang xa hoi. hieu va cau luc va ((danh de) or (dan de)) cua triet*.