Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac thuc » cach thuc, cac thu, can thuc
lai cua » dai cua, hai cua, lai chau
dan lai » dan loai, dan lap, dan lat
thuc va » thuc vat, thuc dan, thuc day
sach ky » sach y, sach ty, sach kem
xay hoi » tay hoi, cay phoi, gay thoi
sac ky » cac ky, sai ky
va dan » ca dan, va dao, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sac ky)) dang ((xay hoi) OR (xa hoi)). lieu va cac thuc va dan lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) dang ((xay hoi) OR (xa hoi)). lieu va cac thuc va dan lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) dang ((xay hoi) OR (xa hoi)). lieu va cac thuc va dan lai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) dang ((xay hoi) OR (xa hoi)). lieu va cac thuc va dan lai cua triet*.