Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cam thuc » am thuc, nam thuc, cam thu
tang ma » mang may, tang van
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
nang ma » sang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa
ve cam » ve cham, ve cac, va cam
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 y ((nang xa) or (((nang ma) OR (tang ma)))) hoi. hieu ve cam thuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (((nang ma) OR (tang ma)))) hoi. hieu ve cam thuc va hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang xa) or (((nang ma) OR (tang ma)))) hoi. hieu ve cam thuc va hanh vi cua triet*".