Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
mach cao » mach cam, mac ca, sach cap
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
cam thuc » am thuc, nam thuc, cam thu
hieu va » lieu va, hieu qua
su mach » su sach
tang ma » tang van
nang ma » sang ma, nang cao
va cam » va cham, va cac, va cao
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 mach cao ((nang ma) or (((tang ma) or (mang may)))) hoi. hieu va cam thuc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su mach cao ((nang ma) OR (((tang ma) OR (mang may)))) hoi. hieu va cam thuc van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su mach cao ((nang ma) or (((tang ma) or (mang may)))) hoi. hieu va cam thuc van hanh vi cua triet*.