Sort:  

It may be the time and day that you're making the post that changes how many votes you get. While it may be day time in your country when you post it, in other countries people may be asleep and not on Steemit. Also, it depends what your posts are about and whether it is interesting or not.

Did I answer your answer your question correctly? I may not have understood it properly. But here is an article explaining how voting works:
https://steemit.com/steemit/@bronsonhill/how-to-earn-money-from-upvoting

yeah i understand you, but i still miss something in my posts.
because i see some guys or girls didn't write anything interesting and they post get many dollars! thats why i say the time is important with the tag

Yeah that's true, some people are attracted to certain posts I guess. I'm not sure. Sometimes it's a matter of luck too, popular topics can be quite unpredictable

yeah you're right! if i find something about this i gonna let you know