Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
mang cua » manh cua, dung cua, ban cua
cac truc » cau truc, cac tru, cac trung
minh lai » minh hai, minh ai, minh lam
va triet » va thiet, va trien, ve triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
truc va » thuc va, thuc vat, trung va
va minh » van minh, vua minh, va kinh

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

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