Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lai cua » dai cua, hai cua, lai chau
va tinh » may tinh
va kinh » qua kinh
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
mang xa » mang may, dang xay, mang cua
va cau » van cau, va cac, 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: so sach ky ((mang xa) or (lang xa)) hoi. lieu va cau truc ((va kinh) OR (va tinh)) lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((mang xa) OR (lang xa)) hoi. lieu va cau truc ((va kinh) OR (va tinh)) lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((mang xa) or (lang xa)) hoi. lieu va cau truc ((va kinh) OR (va tinh)) lai cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky ((mang xa) or (lang xa)) hoi. lieu va cau truc ((va kinh) OR (va tinh)) lai cua triet*.