# will send out harsh arrows of famine against you

"will make you feel the pain of intense hunger"

# increase the famine on you

"make the famine more severe for you" or "make the famine last longer for you"

# break your staff of bread

"cut off your food supply". This phrase means removing the supply of food that the people were depending upon. See how "staff of bread" is translated in Ezekiel 4:16.