Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh dai » danh dau, danh di, danh sai
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, duy sang
ky tang » ky nang, ky dang, kho tang
hieu he » hieu ve, hiem he, hieu le
hiem xe » hiem xa
ha danh » han danh, hoa danh, ha anh
ma hoi » mai hoi, xa hoi, ma hoa

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 sang) OR (ky tang)) ma hoi. ((hieu he) or (hiem xe)) nam thu ha danh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky sang) OR (ky tang)) ma hoi. ((hieu he) OR (hiem xe)) nam thu ha danh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) OR (ky tang)) ma hoi. ((hieu he) or (hiem xe)) nam thu ha danh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) OR (ky tang)) ma hoi. ((hieu he) or (hiem xe)) nam thu ha danh dai cua triet*.