Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
su sach » vu sach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
so sach » so sanh, bo sach, co sach
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
ve cam » ve cham, va cam, ve cai

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) OR (so sach)) ky lang xa hoi. hieu ((ve cam) or (ve cac)) xuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky lang xa hoi. hieu ((ve cam) OR (ve cac)) xuc va hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky lang xa hoi. hieu ((ve cam) or (ve cac)) xuc va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky lang xa hoi. hieu ((ve cam) or (ve cac)) xuc va hanh vi cua triet*.