For sure. However, you really have to do a very good documentation. Documenting your strong ties in the Philippines or in your home country is a given, regardless if you have an invitation or not. What you need to really need to make sure you will submit is a detailed itinerary with supporting documents.
The most important part of your itinerary is your accommodation. You need to show proof that you have hotel reservations booked on the dates of your declared intended travel schedule.
For other questions about tourist visa application, check our Frequently Asked Questions page.