Add an 'x' to column U if

Hello,

After a fair bit of searching i'm unable to find / alter a suitable macro.

Aim:
- Look at A2:O2 and if 'this word or words' AND 'this word or words' appear in any cell then add an 'x' to U2.

Misc:
- spread sheet has thousands of rows
- there will be a number of terms to search for. Such as ('hello' AND 'goodbye', 'red' AND 'blue, 'blue' AND 'water')

Would much prefer a macro as there are already a number of formulas involved.

Many thanks in advance