Amazon UK has recently changed their keyword structure from 5 x 5 entries with a 50 charicter limit to a single entry with 1000 charicter limit.
They have not yet given any adequete info on seller central for the new structure so it seems to be up to us to figure this out.
I asked seller central if words can be used in any combination and if you need a comma to seperate entries
they replied with this:
Thank you for the suggestions, I will escalate it accordingly.
In answering your questions:
The search terms can not be used in any combination.
Meaning if your keywords look like this, mens, womens, ladies, girls, heel, foot, shoe, insole, pad, inserts, gel, foam, etc
The combinations you gave as an example would not be recognised.
Only if the search terms contained: mens heel pad, mens shoe insert, gel shoe insert, ladies foam shoe pad , etc...would the combinations you mentioned work.
This format will however, allow each term in the entire phrase to be a search term on its own. For example, mens is searchable on its own,l shoe will be searchable on its own, etc
To answer your second question. A comma is used to separate the terms,
--------------- this suggests that all previous entries of keywords need to be replaced by an entirely new system.
I tried searching for my own products ( with 5 x 50 charicter entries and a combination ofrandom words )
this demonstates that old listings with x5 keyword entries still works by mixing up keywords .....
so the question is how can we be sure that it is worth the work to resubmit keywords for all products?
How do we know that keyword random combinations no longer work when i can see evidence to the contrary for old listings
It seems hard to imagine that the search engine on amazon runs searches on mix and matching keywords and simultaneously giving results on exact match entries only for newly listed products.............
one for the experts here