Strong Female lead manga please (yakuza,martialisch Arts or something like that) For exam ...

http://www.mangago.zone/read-manga/junai_tokkou_taichou/
http://www.mangago.zone/read-manga/hana_ni_arashi/
http://www.mangago.zone/read-manga/beast_master/
http://www.mangago.zone/read-manga/wild_ones/
http://www.mangago.zone/read-manga/gokusen/
http://www.mangago.zone/read-manga/nodame_cantabile/ (ok..this isn't exactly what you want, but in spirit...or maybe ignorance... she is one of the strongest ;D)

http://www.mangago.zone/read-manga/saver/
Strong female lead...she's like a samurai

http://www.mangago.zone/read-manga/ichi/

I watched the anime, but have not read the manga. Here's a link to manga though.
http://www.mangago.zone/read-manga/seirei_no_moribito/