problem in air condition blower power

hello sir im adil malik from pakistan sir im the lover or daewoo race car i have very good condition daewoo race.sir my car has litter bit problem in air condition blower power.i mean to say that the thrust or the pressure of the blower air is slow.even i do the compelet services of air condition system but problem is still there.so plz to advice me what can i do or plz give the sloution of my problem.
Regard's
adil malik