The primary objective of this study is to determine the efficacy of an Oxaliplatin / Irinotecan / Bevacizumab therapy followed by Docetaxel / Bevacizumab therapy followed by Bevacizumab until progression in the treatment of locally advanced metastatic gastric cancer, in terms of response rates (complete or partial response, determined by radiologic evaluation according to Response Evaluation Criteria in Solid Tumors (RECIST)).