Perhaps you should try some spelling variations:
chemical integration » chemical interaction, chemical interactions, clinical integration
check integration » checking integration, work integration, rk integration
weak integration » work integration, weak interactions, rk integration
wear interaction » ear interaction, near interaction, weak interactions
weak interaction » weak interactions

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: %((((weak integration) OR (((check integration) OR (chemical integration))))) OR (((wear interaction) OR (weak interaction))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((weak integration) or (((check integration) OR (chemical integration))))) or (((wear interaction) or (weak interaction))))%22".
• Adding a wildcard symbol may retrieve word variants: %((((weak integration) or (((check integration) OR (chemical integration))))) or (((wear interaction) or (weak interaction))))%22*.