Perhaps you should try some spelling variations:
summa » suma (Expand Search), samma (Expand Search), sukma (Expand Search)
summah » sumah (Expand Search), sammah (Expand Search), sukmah (Expand Search), sumpah (Expand Search)
summar » sumar (Expand Search), sammar (Expand Search), sukmar (Expand Search), summary (Expand Search), summer (Expand Search), lsummary (Expand Search)
summarh » sumarh (Expand Search), sammarh (Expand Search), sukmarh (Expand Search), summaryh (Expand Search), summerh (Expand Search), lsummaryh (Expand Search), summary (Expand Search), lsummary (Expand Search)
semma » stemma (Expand Search), semua (Expand Search), lemma (Expand Search)
lsukmary » lsummary (Expand Search), summary (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: karachi : (emma OR ((summa OR semma) OR (((summah OR ummah) OR (summar OR lsukmary)) OR summarh)))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: karachi : (emma OR ((summa OR semma) OR (((summah OR ummah) OR (summar OR lsukmary)) OR summarh))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "karachi : (emma OR ((summa OR semma) OR (((summah OR ummah) OR (summar OR lsukmary)) OR summarh)))".
• Adding a wildcard symbol may retrieve word variants: karachi : (emma OR ((summa OR semma) OR (((summah OR ummah) OR (summar OR lsukmary)) OR summarh)))*.