can see all searching result if you type the keyword after "="

google searching result

require 'open-uri'
require 'uri'

url = 'https://www.google.co.jp/search?q=シャドウバース リセマラ'
url_escape = URI.escape(url)
user_agent = 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.63 Safari/537.36'
charset = nil
html = open(url_escape, "User-Agent" => user_agent) do |f|
  charset = f.charset
  f.read
end

# <h3 class="r">-ここにはさまれた文字列-</h3>を集める
strings =  html.scan(%r{<h3 class="r">(.+?)</h3>})

# <a>タグの中のhref属性とタイトルを抜き出す
for i in 0...strings.length do
  url, title = (strings[i][0].scan(%r{<a href="(.+?)".+?>(.+?)</a>}))[0]
  puts "#{title} #{url}"
end