see here > https://bitcointalksearch.org/topic/newbies-read-before-posting-1689727
Ok. I will not use the data from bitcointalk then. If really I realize I need those information, I will just scrap the website and use my own local search engine.
site:bitcointalk.org your query here
It will search stuff only on Bitcointalk.org
Thanks for the tips, but like I said google is not suitable in this case as I need metadata (author and date) related to keywords.
But never mind, I will do that with another tools like https://scrapy.org. Anyway the built-in search was not the best way to do it.