What sources of information are there to find suitable congress, reunions, convention and other scientific gathering events? I started a PhD in bioinformatics last year, changing my previous (undergrad) research topic from genetic engineering / virology  to chemoinformatics / neglected diseases. I've already went to a few congresses related to my field, but I'm not sure I'm aware of everything that is out there. 

Back in my previous lab, various senior scientists would suggest me different conferences, but I'm the only one here working in chemoinformatics and my professor is rather new to the area too. 

Is there any source of information to rapidly find scientific conferences? I'm having a hard time to find good ones about chemoinformatics

Suggestions?
A quick search at the CORE conference ranking website produces the following:

Tier A:


IEEE Computational Systems Bioinformatics Conference (CSB) [can't find a link! WikiCFP seems to think it hasn't been held in a while either]


Tier B:


Asia-Pacific Bioinformatics Conference (APBC) Perennial website
Workshop on Algorithms in Bioinformatics (WABI) 2018 website


Tier C:


Bioinformatics Visualization (BioVis) 2018 website
IEEE Bioinformatics and Bioengineering (BIBE) 2018 website
IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology (CIBCB) 2018 website


An alternative venue for searching for relevant conferences is WikiCFP, which gathers Calls-For-Papers of a great many conferences.