Bhava signifies certain things, and the planet signifies some too. So when the bhava gets the placement of a planet the results of the bhava are destroyed.
Bhava is destroyed when malefic is in it, it is hemmed in malefic and it receives a malefic influence vide an aspect. and its significator also suffers from malefic influence.
Assume that Mercury with Saturn is in 5th in this situation we can say that intellect and learning along with wisdom/chances to beget progeny is compromised.
Here mercury signifies the the intellect and learning.
The 5th house signifies the wisdom/progeny.
Saturn signifies obstruction and practical wisdom.
Conclusion - The native with like-wise placement will have a break in education or will not study further, his intellect will be limited to his area of work, but he is likely to have sound practical knowledge related to his work.