Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam
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: so sach y tang ((ma hoi) OR (xa hoi)). hieu ve cam luc van hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y tang ((ma hoi) OR (xa hoi)). hieu ve cam luc van hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach y tang ((ma hoi) OR (xa hoi)). hieu ve cam luc van hanh vi cua triet*.