http://www.mangago.me/read-manga/haru_wo_daite_ita/
http://www.mangago.me/read-manga/hey_class_president/
http://www.mangago.me/read-manga/gokujou_no_koibito/
http://www.mangago.me/read-manga/rutta_to_kodama/
http://www.mangago.me/read-manga/brother_x_brother/
http://www.mangago.me/read-manga/saa_koi_ni_ochitamae/
http://www.mangago.me/read-manga/okane_ga_nai/
http://www.mangago.me/read-manga/crimson_spell/
http://www.mangago.me/read-manga/kirepapa/
http://www.mangago.me/read-manga/yatteraneeze/
http://www.mangago.me/read-manga/junjou_romantica/
http://www.mangago.me/read-manga/sekaiichi_hatsukoi/
http://www.mangago.me/read-manga/himegoto_asobi/
http://www.mangago.me/read-manga/hyper_love_power/
http://www.mangago.me/read-manga/koisuru_boukun/
http://www.mangago.me/read-manga/toshishita_no_ryuugi/
http://www.mangago.me/read-manga/kayashimashi_no_yuuga_na_seikatsu/
http://www.mangago.me/read-manga/love_stage/
http://www.mangago.me/read-manga/ousama_ni_kiss/
http://www.mangago.me/read-manga/jazz/
http://www.mangago.me/read-manga/passion/
http://www.mangago.me/read-manga/koi_wa_itsumo_arashi_no_youni/
http://www.mangago.me/read-manga/corsair/
http://www.mangago.me/read-manga/kouun_no_rihatsushi/
http://www.mangago.me/read-manga/ten_count/
http://www.mangago.me/read-manga/konya_mo_nemurenai/
Dear Green series:
http://www.mangago.me/read-manga/dear_green/
http://www.mangago.me/read-manga/dear_green_hitomi_no_ounowa/
the warui series from Sakuraga Mei:
http://www.mangago.me/home/mangalist/6968/
the series from Fujisaki Kou:
http://www.mangago.me/home/mangalist/7543/
Genwaku no Kodou
At MangaPark.com, if you click on "search" it will take you to a page with many options, including if you want to choose 10+ chapters, 50+ chapters, 200+ chapters, etc.
Try Green Emerald's list - http://www.mangago.me/home/mangalist/9447/
AND Merry's list - http://www.mangago.me/home/mangalist/19097/
Thank you everyone that's a lot I have to bookmark them
Maria's list: Long Yaoi/Shounen Ai Manga
http://www.mangago.me/home/mangalist/1759/
Yaoi with lots of chapters ?
Ex. Ze, viewfinder, totally captiveted, sex pastol, katekyo , yume musubi