how to search in more than one column?

how to search by a word in three or four columns if exist record this column

i use a code which search in one column only

so i have to search by the same word three times each time in a different column

i use this code

 for E=1:R            % from 1 : length of columns
B=~cellfun('isempty',regexp(D,'power')) ;   % works good  search for power and return 1 or 0
if (B(E) == 1)               % if value of array greater than or equal 1
    Defs(j)=E;              % save its postion (E,1)
        j=j+1;
else                     % save all arrays didn't have 'power' separately
        not(k)=E;
        k=k+1;
end
end

how to search in many columns?

[Amr Hashem]

Here this code search in one column.

I want to modify it to search in many columns,

ex( if the word exist in column 1 or 2 or 3 )