Perhaps you should try some spelling variations:
"biological and chemical physics, biomedical engineering" » "biological and chemical physical, biomedical engineering"
"biological and mathematical physics, biomedical engineering" » "biological and mathematical physical, biomedical engineering", "biological and mathematics physics, biomedical engineering"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"biological and chemical physics, biomedical engineering\") OR (\"biological and mathematical physics, biomedical engineering\"))".
• Removing quotes may allow a broader search: (( biological and chemical physics, biomedical engineering ) OR ( biological and mathematical physics, biomedical engineering )).
• Adding a wildcard symbol may retrieve word variants: (("biological and chemical physics, biomedical engineering") OR ("biological and mathematical physics, biomedical engineering"))*.