Perhaps you should try some spelling variations:
summa » suma (Expand Search), samma (Expand Search), sukma (Expand Search)
ssummar » ssumar (Expand Search), ssammar (Expand Search), ssukmar (Expand Search), lsummary (Expand Search), ssummary (Expand Search), ssummer (Expand Search), slsummary (Expand Search)
summar » sumar (Expand Search), sammar (Expand Search), sukmar (Expand Search), summary (Expand Search), summer (Expand Search), lsummary (Expand Search)
ssummer » summer (Expand Search)
sammah » samah (Expand Search), jammah (Expand Search), samma (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "karachi : ((summa OR ((ssummar OR ssummer) OR summar)) OR sammah)~".
• Adding a wildcard symbol may retrieve word variants: karachi : ((summa OR ((ssummar OR ssummer) OR summar)) OR sammah)*.