import re

Glist={'masked 111', 'DATA',"My Add no" , 'MASKEDDATA',}
glst_rx = r"\b(?:{})\b".format("|".join(Glist))

def garbagefin(x):
    if re.search(glst_rx, x, re.I):
    	return ''
    else:
        return x
            
print(f'"{garbagefin("I am masked 111")}"')#-Blank
print(f'"{garbagefin("I am My Add No")}"')#-Blank
print(f'"{garbagefin("I am My add")}"')#-I am My add
print(f'"{garbagefin("I am My MASKEDDATA")}"')#-Blank