2. The computer system of claim 1 , wherein the instructions to modify the boolean search query comprise instructions to remove an OR operand and a corresponding OR operator when an operand is an OR operand, and instructions to add an AND operand and a corresponding AND operator when an operand is an AND operand.
2. The computer system of claim 1 , wherein the instructions to modify the boolean search query comprise instructions to remove an OR operand and a corresponding OR operator when an operand is an OR operand, and instructions to add an AND operand and a corresponding AND operator when an operand is an AND operand. 4. The computer system of claim 2 , wherein the OR operand comprises a resource that the user has not accessed after a selected time threshold.