Perhaps you should try some spelling variations:
summa » summar (Expand Search), suma (Expand Search), samma (Expand Search)
lsummary » lsummarry (Expand Search), lsumary (Expand Search), lsammary (Expand Search), summary (Expand Search), summar (Expand Search)
summarry » summarrry (Expand Search), sumarry (Expand Search), sammarry (Expand Search), summary (Expand Search), summar (Expand Search), summitry (Expand Search)
ssummary » ssummarry (Expand Search), ssumary (Expand Search), ssammary (Expand Search), summary (Expand Search), summar (Expand Search)
semmar » summar (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 (lsummary OR (semmar OR (summarry OR ssummary))))~".
• Adding a wildcard symbol may retrieve word variants: karachi : (summa OR (lsummary OR (semmar OR (summarry OR ssummary))))*.