The ones I find most interesting (other than the completely broken cases like Rene mentioned) are like this "olaiior oloro eeeoly", the bottom line of F23v.
"ior" shouldn't happen, and it being a part of 3 unique words at the bottom of a page of text and also the only 3 words on the line.. makes be a bit suspicious about how "voynich" they are collectively. Outside of my simple rules, they just don't look very voynich to me, so I'm guessing they also break more complex rules put forth by others (I should probably use "preferences" rather than "rules".. but you get the idea). They feel a bit like someone trying to use the system to write something you can't mess around with as much. A name or date for example and it broke the normal flow, or maybe a more simple style of ciphering employed.
"oloro" also has this weird spacing "o.l.o.r.o" which reminds me of "lkody" on You are not allowed to view links.
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Login to view. and doesn't seem to be a very common thing, so I'm not sure its just by chance.