Compare a list of product names and return most similar products

We have a list of 10.000 rows that is constanlty updating. So this must be done automatically in excel or php. It will take every row and compare it with all the others. then it will return the most similar results. Those similar results will have some common text. This text must be returned in another column in order to match them. For example: Azzaro Chrome Eau De Toilette 100ml Azzaro Chrome Eau De Toilette 100ml & 100ml Aftershave Azzaro Chrome Eau De Toilette 100ml & 200ml Shower Gel Azzaro Chrome Sport Eau De Toilette 100ml Azzaro Chrome Sport Eau De Toilette 30ml Azzaro Chrome Sport Shower Gel 50ml Xpel Tea Tree 100% Pure Tea Tree Oil 10ml Xpel Tea Tree 100% Pure Tea Tree Oil 30ml Xpel Tea Tree Anti-bacterial Handwash 500ml Xpel Tea Tree Facial Scrub 250ml Xpel Tea Tree Foaming Face Wash 200ml The manufacturer will be given in another column and it should be subtracted from the product name. for the examples above the manufactures are Azzaro and Xpel. So the final product names for similarity comparison will be Chrome Eau De Toilette 100ml Chrome Eau De Toilette 100ml & 100ml Aftershave Chrome Eau De Toilette 100ml & 200ml Shower Gel Chrome Sport Eau De Toilette 100ml Chrome Sport Eau De Toilette 30ml Chrome Sport Shower Gel 50ml Tea Tree 100% Pure Tea Tree Oil 10ml Tea Flower 100% Pure Tea Tree Oil 30ml Tea Tree Anti-bacterial Handwash 500ml Tea Tree Facial Scrub 250ml Tea Tree Foaming Face Wash 200ml We must get the most similar results for each row. Do not ask us how. If we knew how we would have done it ourselves. Similarity is the key word. Some first thoughts is to order them by name and check word by word.