Analysis of Contingency Table: Overview

Chi-square calculations are only valid when all expected

values are greater than 1.0 and at least 20% of the expected

values are greater than 5. These conditions have not been

met, and thus the chi-square calculations are not valid. To

avoid this problem, combine two or more rows or columns.

What do they mean "combine" I can't just combine three columns of data, so is there a better test I can use? Thank you.