Perhaps you should try some spelling variations:
"handbook of experimentellen pharmacologic" » "handbook of experimentelle pharmakologie", "handbook of experimental pharmacologic", "handbook of experimental pharmacology"
"handbook of experimentellen dermatologie" » "handbook of experimenteller dermatologie", "handbook of experimentelle teratologie", "handbook of experimentelle gerontologie"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("handbook of experimentellen pharmakologie") OR ((("handbook of experimentellen pharmacologic") OR ("handbook of experimentellen dermatologie")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"handbook of experimentellen pharmakologie\") or (((\"handbook of experimentellen pharmacologic\") OR (\"handbook of experimentellen dermatologie\"))))".
• Removing quotes may allow a broader search: (( handbook of experimentellen pharmakologie ) or ((( handbook of experimentellen pharmacologic ) OR ( handbook of experimentellen dermatologie )))).
• Adding a wildcard symbol may retrieve word variants: (("handbook of experimentellen pharmakologie") or ((("handbook of experimentellen pharmacologic") OR ("handbook of experimentellen dermatologie"))))*.