Welcome to Orchid Board Gofa
If your orchids are not identified it can sometimes be impossible to find exactly what they are. As you have found there can sometimes be lots of ones that look the same, especially with the very popular geneus which have been hybridised many many times without records of what is in them.
Yours look like Dendrobium, probably many of them are hybrids of Dendrobium phalaenopsis from the look of the flowers.
This is one of the areas where there are lots and lots of hybrids which are completely unregistered and unamed and many of them look very similar to each other.
We call them NoID here and many of us (inluding me) have many NoIDs. They are just as pretty, don't worry too much if you can't find an exact name. If you are anything like me you may try and buy more named ones in the future as you get more involved with this hobby, but I still love my NoIDs as well
As for care, I think that advise for the care of Dendrobium phalaenopsis should be fine for you and it looks like you are doing well so far.
Generally Den phals like plenty of light, but as with all orchids take care about not giving too much direct light. They should be kept evenly moist but not too wet. They tend to like standard house temperatures. They DON'T want the winter rest which is required for some other Den types.
Help Needed: Dendrobium Identification
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