Paintings unknown

I bought these at a sale and cannot find any information about them. I cannot ID the signatures. Can anyone give me any information about these. I really like them and wish to know more. The frames measure 9"x 12". The paintings measure 6" x 9". One of them I believe has CHAO in bottom right corner. It may be the whole name or part of it. They look like pictures of of an island inlet with the palm trees and water. On the back of one it says- A gift from the Tajudins 1985. Any info please and Thank you