Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
danh lai » danh sai, gianh lai, dinh lam
toc sach » hoc sach, doc sach, thuoc sach
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
sach vu » sach va, sach tu, sach uu
cam luc » cam xuc, cau luc
va danh » va dinh, va dan, va hanh
vu nang » vuc nang, va nang, vu dang
cua tre » cua te, cuu tre, dua tren
luc va » duc va, tuc va, loc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach vu nang xa hoi. ((hieu ve) OR (hieu van)) cam luc va danh lai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach vu nang xa hoi. ((hieu ve) OR (hieu van)) cam luc va danh lai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach vu nang xa hoi. ((hieu ve) OR (hieu van)) cam luc va danh lai ((cua tre) or (cua triet))*".