Do certain foods bother you more than others? Do they cause constipation, bloating or diarrhea? This list of foods might help you figure out if a particular type of sugar might be the cause.

http://www.healthhype.com/fodmap-diet-foods-to-avoid-in-ibs-bowel-disorders-with-bloating-and-gas.html

It covers Oligosaccharides, Fructans, Galactans, fructo-oligosaccharide (FOS or oligofructose), lactose, fructose, sorbitol, xylitol, mannitol, isomalt, erithrytol, arabitol, erythritol, glycol, glycerol, lactitol, ribitol. Short lists of foods that have these sugars are included.

It can be tricky to find comprehensive lists of foods that are high in the various sugars. Try doing a search like this = foods high in fructose

Try this list and please suggest more lists:
http://sacfs.asn.au/download/SueShepherd_sarticle.pdf