Although I find it difficult to follow your question, I'll try. If you simply want to compare values within a single row and don't want to look at other rows, use the following syntax:
=IF(AND(B3=D3,C3=E3),"","d")
If want to know if the values in one row of E&F match exactly the rows of columns B&C use COUNTIFS().
=IF(COUNTIFS(B:B,D3,C:C,E3)>0,"","d")