19. The computer program product of claim 18 , 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.
19. The computer program product of claim 18 , 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. 20. The computer program product of claim 19 , 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 third utilization threshold, removing, from the boolean search query: (i) an operand determined to be the next least-popular operand based on the list of resources that the user accesses, and (ii) a preferred file type.