This paper proposes an ontology mapping based framerowk that allows searching for web resources using multiple ontologies. The proposed solution uses a mapping ontology that is a part of a recent Semantic Web initiative called the Simple Knowledge Organization System (SKOS). On top of that, we propose the search algorithm that takes arguments from one ontology and generates queries compliant with other ontologies. We evaluated the solution on a web application that allows using a local ontology, which describes content of a web site, to search for web resources in remote digital libraries or object repositories based on more general content ontologies. Categories and Subject Descriptors H.3.3 Information Storage and Retrieval – Information Search and Retrieval General Terms Algorithms, Design Keywords Ontology, ontology mapping, search, interoperability