The phrase "seeming coincidence" is correct and can be used in written English.
It is often used to describe an event or situation that appears to be coincidental, though it may have deeper meaning or significance. Example: The meeting between the two old friends at the coffee shop was a seeming coincidence, but it turned out to be a carefully planned reunion orchestrated by their mutual friend.
By a seeming coincidence, he paid for flight instruction for an acquaintance at Huffman Aviation, the training school in Venice, Florida, that many of the suicide hijackers attended.
The playwright and the novelist had little in common save their extraordinary inventiveness, the universality of their appeal, and the seeming coincidence of their near-identical death dates (in fact, England used the Julian calendar and Spain the Gregorian calendar at the time, so the dates were actually 10 days apart).
It seems no coincidence that a cook's collection of knives is known as her wardrobe.
It seems no coincidence, in a book so poignant yet improbably funny, that Mr. Evison has chosen this particular illness.
It seems no coincidence that some of the sculptors here have been responsible for previous Turbine Hall installations.
It seems no coincidence that this year's UKIP surge has barely breached even the outskirts of the UK capital.
But it seemed no coincidence that the family made the move just as the film was being released.
Modern Germany may be run by a woman — Chancellor Angela Merkel, routinely called the world's most powerful female politician — but it seems no coincidence that she is childless.
Caitlin Rose (right), is a Nashville country sensation with a voice so wry and heart-breaking it seems no coincidence she shares a birthplace with Jack Daniel's whiskey.
It hardly seems a coincidence that the first truly democratic leadership election in your party's recent history is producing such a powerful resurgence in optimism.
It seemed no coincidence that Mr. Rudd's first major policy announcement since returning to the leadership was aimed at neutralizing that line of attack.
