Perhaps you should try some spelling variations:
"mammal biology" » "mammal ecology", "mammalian biology"
"larval biology" » "larval ecology", "oral biology", "floral biology"
"algal biology" » "floral biology", "fungal biology", "oral biology"

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: (((("algal biology") OR ("mammal biology"))) OR ("larval biology")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"algal biology\") OR (\"mammal biology\"))) or (\"larval biology\"))".
• Removing quotes may allow a broader search: (((( algal biology ) OR ( mammal biology ))) or ( larval biology )).
• Adding a wildcard symbol may retrieve word variants: (((("algal biology") OR ("mammal biology"))) or ("larval biology"))*.