Using "OR" in a screener query requires caution because queries are evaluated with "AND" taking precedence over "OR". The outcome of your query can vary significantly depending on how you use brackets to group conditions.

For example: 

(Net Profit TTM Growth %  > 15  OR 

 Net Profit QoQ Growth %  > 20)  AND 

 ROE Annual %  > 40    

This yields 134 results, as the brackets limit the “OR” condition to just two filters: Net Profit TTM Growth% and Net Profit QoQ Growth%.

Now, if you run the same query without brackets:

Net Profit TTM Growth %  > 15  OR 

 Net Profit QoQ Growth %  > 20  AND 

 ROE Annual %  > 40 

It gets over 300 results because, without brackets, “OR” is applied to all subsequent conditions, making all of them optional.