Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
dam thuc » am thuc, dan thuc, nam thuc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
tang ma » tang van
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua

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 ((tang ma) OR (mang may)) hoi. hieu van ((dam thuc) or (cam xuc)) tuan anh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((tang ma) OR (mang may)) hoi. hieu van ((dam thuc) OR (cam xuc)) tuan anh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((tang ma) OR (mang may)) hoi. hieu van ((dam thuc) or (cam xuc)) tuan anh vi cua triet*".