Perhaps you should try some spelling variations:
"lungs / diseases, instructive" » "lungs / disease, instructive", "lungs / diseases, constructive", "lungs / diseases, instruction", "lungs / diseases, instructions"
"lungs / diseases, destructive" » "lungs / disease, destructive", "lungs / diseases, destruction", "lungs / diseases, constructive"
"lung / diseases, destructive" » "lung / disease, destructive", "lung / diseases, destruction", "lung / diseases, constructive"

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: (("lungs / diseases, instructive") OR ((("lungs / diseases, destructive") OR ("lung / diseases, destructive")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"lungs / diseases, instructive\") or (((\"lungs / diseases, destructive\") OR (\"lung / diseases, destructive\"))))".
• Removing quotes may allow a broader search: (( lungs / diseases, instructive ) or ((( lungs / diseases, destructive ) OR ( lung / diseases, destructive )))).
• Adding a wildcard symbol may retrieve word variants: (("lungs / diseases, instructive") or ((("lungs / diseases, destructive") OR ("lung / diseases, destructive"))))*.