Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dung sai » dung tai, dung va, dung dat
sang tao » hang tai
sai cua » dai cua, hai cua, lai cua
thu xay » thau xay, thuc xay, tu xay
hieu le » hieu ve, hieu ly, tieu le
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
sang ma » tang ma, nang ma, mang may
hieu he » hieu ve, hiem he, hieu hien

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