Here's a breakdown of the issue:
* "Si" means "if" in French. It doesn't fit the context of an invitation.
* "Viens-tu" means "are you coming" or "do you come," but it's missing the subject pronoun ("tu" meaning "you").
* "Chez moi" means "at my place" or "to my house."
Here are some correct ways to say "Do you want to come to my house?" in French:
* "Tu veux venir chez moi ?" (Formal and polite)
* "Tu veux venir à la maison ?" (More informal, meaning "to the house")
* "Viens chez moi ?" (Very informal, suggesting a casual invitation)
Let me know if you have any other French phrases you'd like to understand!