Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cam thuc » am thuc, nam thuc, cam thu
va triet » va thiet, va trien, ve triet
thu nang » thi nang, thu hang, thu bang
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
so sach » bo sach, co sach, hoc sach
hieu ve » hieu va, hieu van
so sanh » do sanh
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (so sanh)) thu nang x hoi. hieu ve cam thuc van hanh vi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) thu nang x hoi. hieu ve cam thuc van hanh vi ((va triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) thu nang x hoi. hieu ve cam thuc van hanh vi ((va triet) or (su triet))*".