It's uncommon for a lady to approach a stranger. If she does it, she is either incredibly social or really interested in you. If she approaches you and says, "I think I saw you someplace before," that's a positive indicator! The reason why a woman would approach a man is because they find him attractive. Most women will only approach someone they find attractive too. If a woman doesn't approach you then there are two possibilities: first, she may not find you attractive enough to bother talking to; second, she may not speak the language well enough to communicate properly with you. Women usually communicate their intentions by words or actions, so if she doesn't understand you then you will have to show her how to communicate effectively with you using a gesture or an object. For example, if she wants a book from the bookstore then when she sees it she can point to it and say "book". After doing this several times she will learn what book means and you will both be able to enjoy your time more comfortably. Strangers often make awkward interactions. If a woman approaches you outside the context of something familiar like a party or a crowd of people then that's when things might become uncomfortable for her too. In this case, it's important to be patient with her and not rush things. Take your time and talk with her openly about whatever comes to mind.