Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cau tuc » cau truc, cau tu, cau luc
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: su sach ky ((nang xa) or (lang xa)) hoi. lieu va cau tuc ((va danh) OR (va hanh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang xa)) hoi. lieu va cau tuc ((va danh) OR (va hanh)) vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) or (lang xa)) hoi. lieu va cau tuc ((va danh) OR (va hanh)) vai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (lang xa)) hoi. lieu va cau tuc ((va danh) OR (va hanh)) vai cua triet*.