Various embodiments of systems and methods for retrieving open purchase orders using an optimized search tool are described herein. The method involves rendering a set of search parameters on a graphical UI of a computer. In an aspect, the method further includes receiving data relating to at least a first search parameter of the set of search parameters. Further, the method includes determining that data relating to at least a second search parameter of the set of search parameters is unavailable and determining the data relating to the at least second search parameter based on extrapolating the data relating to the at least first search parameter. In an aspect, the method involves performing a search based on the data relating to the at least first search parameter and the at least second search parameter. Based on the performed search, one or more open purchase orders are retrieved for further processing.