Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh tai » thanh hai, thanh toan, doanh tai
va thanh » gia thanh, ban thanh, va tinh
nang mai » nang ma, nang tai, lang mai
tai cua » thai cua, tai cuc, tri cua
so sach » bo sach, co sach, hoc sach
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
so sanh » do sanh
luc va » duc va, tuc va, loc va
va cam » va cham, va cao, va cai

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) OR (so sanh)) ty nang mai hoi. lieu ((va cam) or (va cac)) luc va thanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ty nang mai hoi. lieu ((va cam) OR (va cac)) luc va thanh tai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ty nang mai hoi. lieu ((va cam) or (va cac)) luc va thanh tai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ty nang mai hoi. lieu ((va cam) or (va cac)) luc va thanh tai cua triet*.