Improvement in cloud computing, data owners are motivated to outsource their complex data management systems from local sites to the commercial public cloud for great economic savings and flexibility. But giving better security for data privacy, sensitive data have to be changed to other forms such as encryption before outsourcing, which obsoletes traditional data utilization based on normal keyword search. Thus, enabling an encrypted cloud data search service is of overriding importance. As an enhancement we enhance the existing system we propose an effective-approach to solve the problem of multiple keywords ranked search over encrypted cloud data supporting synonym queries. The main objective of this paper is summarized in two aspects: synonym-based search to support synonym queries and multi-keyword ranked search to achieve more accurate search results. Meanwhile, existing search approaches over encrypted cloud data support only fuzzy keyword or exact search, but not semantics based multi keyword ranked search. Therefore, how to enable an effective searchable system with support of ranked search remains a very challenging problem.