Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dao » lanh dao, thanh dat, thanh dam
va cham » va chat, va tham
dao cua » dai cua, day cua, dan cua
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
va cam » va cac, va cao, va cai
xuc va » duc va, tuc va, luc va
ca hoi » cua hoi, xa hoi, co hoi

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 xang ((ca hoi) OR (cau hoi)). lieu ((va cam) or (va cham)) xuc va hanh dao cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ((ca hoi) OR (cau hoi)). lieu ((va cam) OR (va cham)) xuc va hanh dao cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang ((ca hoi) OR (cau hoi)). lieu ((va cam) or (va cham)) xuc va hanh dao cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang ((ca hoi) OR (cau hoi)). lieu ((va cam) or (va cham)) xuc va hanh dao cua triet*.