15. The computer system of claim 3 , wherein determining modifications to be made to the boolean search query according to the usage information further comprises: in response to determining the search load exceeds a first utilization threshold, removing, from the boolean search query, an operand determined to be the third least-popular operand based on the list of resources that the user accesses.
15. The computer system of claim 3 , wherein determining modifications to be made to the boolean search query according to the usage information further comprises: in response to determining the search load exceeds a first utilization threshold, removing, from the boolean search query, an operand determined to be the third least-popular operand based on the list of resources that the user accesses. 16. The computer system of claim 15 , wherein determining modifications to be made to the boolean search query according to the usage information further comprises: in response to determining the search load exceeds a second utilization threshold, removing, from the boolean search query: (i) an operand determined to be the second least-popular operand based on the list of resources that the user accesses, and (ii) a second language preference.