Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam luc » cam xuc, cau luc
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van
xang xa » lang xa, mang xa, ang xa
sach tu » sach thu, cach tu, sach uu
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua

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

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