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

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