Tuan Anh's duty
+ optimise title of website (I see that you added so it's ok).
+ optimise meta keywords tag.(I will check and give you the keyword analytics for the keywords list you provided.)
+ optimise meta description tag. (we will discuss to get the best description for your website)
+ optimise the numbers keywords in the website content.
+ optimise H1 to H6 tag (use strong, em tag...)
+ optimise title of image link, alt, title attribute of images
+ create Sitemap XML file for website.
+ optimise articles : title, link, des, tags, links (this relate to the content of your website)
+ submit website to webmaster (registering the site to search engine)
+ provide keywords list, the content of description, the content of website.
+ discuss with Tuan Anh about the best keywords and description to use in website
+ help Tuan Anh add the keywords, description into the website and adjust some codes in website
+ upload the sitemap XML to website.