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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("typhoid fever") OR ("typhoid fover"))) OR ("typhoid over"))) OR ("lymphoid fever"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"typhoid fever\") OR (\"typhoid fover\"))) OR (\"typhoid over\"))) OR (\"lymphoid fever\"))".
• Removing quotes may allow a broader search: (((((( typhoid fever ) OR ( typhoid fover ))) OR ( typhoid over ))) OR ( lymphoid fever )).
• Adding a wildcard symbol may retrieve word variants: (((((("typhoid fever") OR ("typhoid fover"))) OR ("typhoid over"))) OR ("lymphoid fever"))*.