Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc dan » hoc dan, thuc vat
sach ty » sach y, sach thu, xach tay
nang ma » tang ma, sang ma, nang cao
sach tu » sach thu, cach tu, sach uu
hieu le » hieu ve, hieu he, hieu ly
ma hoi » mai hoi, xa hoi, ma hoa
le nam » ly nam, he nam, le na
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 ty) OR (sach tu)) nang ma hoi. hieu le nam ((thuc dan) or (thuc hanh)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) nang ma hoi. hieu le nam ((thuc dan) OR (thuc hanh)) hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach tu)) nang ma hoi. hieu le nam ((thuc dan) or (thuc hanh)) hanh vi cua triet*".