Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hanh cua » manh cua, hang cua, hanh sua
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
luc van » luoc van, luu van, duc van
cua cua » cua chua, ca cua, qua cua
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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 ky lang xa hoi. hieu ((ve cam) OR (ve cac)) luc van hanh cua cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky lang xa hoi. hieu ((ve cam) OR (ve cac)) luc van hanh cua cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky lang xa hoi. hieu ((ve cam) OR (ve cac)) luc van hanh cua cua triet*.