Looking ahead to the remainder of the tournament, the 25-year-old admitted that she is hoping this campaign will be a case of third time lucky.
"I'm happy to be back in the semi-finals, the third time I've made it this far," said Sharapova.
"I really hope that the win can come this year. My preparation has been really good. It was nice to win two tournaments coming in.
"I'm happy with the way I've improved, but it only gets tougher from here."
She will take on Wimbledon champion Petra Kvitova on Friday for a place in the final.