Perhaps you should try some spelling variations:
"diseases sea effects." » "diseases sex effects.", "diseases asean effects.", "diseases sedat effects.", "diseases media effects.", "diseases hevea effects.", "diseases data effects."
"diseases cla effects." » "diseases cell effects.", "diseases chap effects.", "diseases ch effects.", "diseases china effects.", "diseases data effects."
"diseases drug effect." » "diseases drug effects.", "diseases drag effect.", "diseases drugs effects."

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: (((("diseases sea effects.") OR ("diseases cla effects."))) OR ("diseases drug effect."))~.
• Removing quotes may allow a broader search: (((( diseases sea effects. ) or ( diseases cla effects. ))) or ( diseases drug effect. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("diseases sea effects.") or ("diseases cla effects."))) or ("diseases drug effect."))*.