Perhaps you should try some spelling variations:
business optical » business political, business critical
business africa » business advice, business affairs
1728 poetry » 1724 poetry, 1722 poetry, 1798 poetry
1722 early » 1727 early
20 early » 10 early, 1820 early, 1720 early

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: %((business optical) OR (business africa)) %1728 poetry %((20 early) OR (1722 early)) works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %((business optical) or (business africa)) %1728 poetry %((20 early) or (1722 early)) works to 1800%22*.