"seem to be certain" is a correct and usable phrase in written English.
It is typically used when describing something that appears to be definite or sure, but it may not necessarily be true. Example: After speaking with the doctor, it seems to be certain that Sarah's illness is not contagious.
Nevertheless, there do seem to be certain kinds of activity that are repeated sporadically in both tectonic and climatic realms.
You don't have a formal repertory company, but there seem to be certain actors you come back to. A. [Sighs.] I don't want to respond to criticism I hear.
This does not mean that there are items in all categories — though a painting by Trump would be something to see — but there do seem to be certain materials, referred to in the agreement as "the Property," that Clifford agreed both to hand over and to assign the "intellectual property rights to DD".
Although variability in the sensitivity of different species to PPPs has not been significantly researched to date, there seem to be certain phylogenetic patterns [13].
There seem to be certain actions, relationships, states, and experiences that one ought to concentrate on or be engrossed in, if meaning is to accrue.
Based on the results of this study, we can conclude that there seem to be certain distinctive personality patterns in patients with chronic HBV and HCV infection.
But nothing seems to be certain these days in state or federal government".
The only thing Afghan officials seemed to be certain of was that Sergeant Nargis was not a Taliban infiltrator.
Many of the victims were factory workers, waitresses or students, and there seemed to be certain shared physical characteristics.
Bondholders – or, more aptly, monoline insurance companies – facing what seems to be certain pain, are looking for someone to share in the fun.
It seems to be certain as the resulting clusters from both K_an and VQ_an have the similar compactness and separation via the values of Xie_Beni and S_Dbw measures.
