Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
y nang » ky nang, ly nang, v nang
ve nam » he nam, le nam, te nam
va nam » van nam, ha nam, va nay

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 y nang ((xa hoi) or (ma hoa)). hieu ((ve nam) OR (va nam)) thuc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((xa hoi) OR (ma hoa)). hieu ((ve nam) OR (va nam)) thuc va hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((xa hoi) or (ma hoa)). hieu ((ve nam) OR (va nam)) thuc va hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((xa hoi) or (ma hoa)). hieu ((ve nam) OR (va nam)) thuc va hanh lai cua triet*.