Searching specific word with find function

Dear Sir,
I have the sample data to contain with unit as TEU and M3. I tried to find these units to be new column to show as TEU or M3.
I saw in raw data to show these unit but when I used the find function.It can not active. Moreover, when I click into each cell.I cannot see the unit to show but I saw without click into the cell. There are something wrong in this raw data? I use the real data and just revised the number.
Please kindly suggest for this case.
thanks a lot.