Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
thuc nano » truc nano, thuc hanh, chuc nang
va triet » va thiet, va trien, ve triet
su cach » su sach, tu cach, su cac
hieu vu » hieu va, hieu ve, hieu su
vu chat » va chat, ve chat, du chat
nano x » nano 1, nano o
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach thuc nano x ho. hieu vu chat ((xuc va) OR (duc va)) hanh vi ((va triet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach thuc nano x ho. hieu vu chat ((xuc va) OR (duc va)) hanh vi ((va triet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cach thuc nano x ho. hieu vu chat ((xuc va) OR (duc va)) hanh vi ((va triet) or (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: su cach thuc nano x ho. hieu vu chat ((xuc va) OR (duc va)) hanh vi ((va triet) or (hoa viet))*.