You can maximize your rewards by sending groups of Bees with matching traits on missions. Pay attention to the Bees' moods, likes/dislikes, and landform specialties to receive significant mission boosts. You also receive mission boosts when the mood of your Bee matches the mood of your Queen. 

See Mission Boosts for more details

You can also upgrade your Bees to help them bring back more rewards. See this page for more details. 

REMINDER: Likes, Dislikes, and Moods are randomly assigned when the Bee is born (whether it is Hatched or is the offspring from Breeding).