Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
sach ki » sach kinh, sach bai, sach kem
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
ki nang » ky nang
tu sach » thu sach, su sach, te sach
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.

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