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

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