Police officers would be discouraged from "shopping" for a sympathetic judge to issue a search warrant under a bill that has passed the state Senate. The bill requires that when an officer has been turned down by a judge on a request for a search warrant, the refusal must be made known to defense attorneys in the case. The defense is also entitled to know the reasons for the refusal. The rule would apply even if another judge agreed later to issue the warrant. The bill, by Assemblyman Larry Stirling (R-San Diego) was returned Friday on a 23-10 vote to the Assembly for acceptance of amendments.