Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
huong doi » huong dan, trong doi, dung doi
nam thuc » nam thuoc, am thuc, nam thu
va huong » va thuong, va phuong, va tuong
cua tre » cua te, cuu tre, dua tren
thuc va » thuc vat, thuc dan, thuc day
so sanh » do sanh
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
ve nam » he nam, va nam, le nam

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: so sanh ((ly nang) OR (ty xang)) xa hoi. hieu ve nam thuc va huong doi ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ((ly nang) or (ty xang)) xa hoi. hieu ve nam thuc va huong doi ((cua tre) OR (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: so sanh ((ly nang) or (ty xang)) xa hoi. hieu ve nam thuc va huong doi ((cua tre) OR (cua triet))*.