Build a website that will host large a number of small articles

A website is required to be built that will contain a large number of small articles (average 50-70 words each). We want to put two set of articles on the website. One set is english and the other is arabic. Each set has apprximately 50000 articles. Also, each set is divided into 7 categories i.e. each category has approximately 7500 articles. We want the users (visiting our website) to be able to search articles on the website. Following search options are required: 1a. Ability to search english articles using english words 1b. Ability to search Arabic articles using Arabic words 2. The search result should include all articles containing the words searched. Only exact word/words and partial word match required. 3. The user should be able to restrict the search results to whithin one or multiple categories. 4. We want the flexibility to add more search options later on (after this project is complete). Please include the following information in your bid: 1. What tools you plan to use to build the website. 2. In which format you will store the english and arabic texts on the website backend The articles are available in MS Word format