select Cnstring,
case when charindex('计算机',Cnstring,1)>0 then 1 else 0 end
+case when charindex('系统',Cnstring,1)>0 then 1 else 0 end
+case when charindex('是',Cnstring,1)>0 then 1 else 0 end
+case when charindex('新东西',Cnstring,1)>0 then 1 else 0 end '匹配次数'
from [表名]
where contains(Cnstring,'"计算机" or "系统" or "是" or "新东西"')