The phrase "an endless search" is correct and usable in written English.
It can be used to describe a continuous or never-ending quest for something, whether it be knowledge, truth, or a physical object.
Example: "After years of research, she found herself in an endless search for the missing piece of the puzzle."
Alternatives: "a perpetual quest" or "an unceasing pursuit".
Romney seems to be forever on a journey out of vagueness, an endless search for identity.
Viewing them, they represent an endless search for a solution to a grim fate.
And for those on an endless search for cute gifts for children, there is a party mobile of three elephants.
"They are on an endless search for the next big thing," said Steve Koonin, president of Turner Entertainment Networks, which includes TNT and TBS.
We are the rebels asking for the storm, and believing that truth is only to be found in an endless search.
In practice, this last freedom has meant allowing multinational corporations to shift resources across the globe in an endless search for lower wages and looser labor standards.
But, when the franchise in question is the Tampa Bay Rays, the departures of two key employees coincides with perennially low attendance and a seemingly endless search for a new ballpark.
They make frequent doctors' appointments, demand unnecessary tests and can drive their friends and relatives -- not to mention their physicians -- to distraction with a seemingly endless search for reassurance.
My day is not made or broken by somebody texting me "good morning" or "sweet dreams" but by allowing myself not to get bummed out, stressed or frustrated by a relatable endless search for young love.
And last spring, Mr. Nelson condemned Mr. Starr, asserting that the president's nemesis had presided over "a bumbling, overzealous, endless search for a crime, any crime, that could be pinned on a target that had been chosen in advance: Bill Clinton".
Guthrie's sprawling catalog includes "Hard Travelin'," about a migrant's endless search for work, which bubbles along with such pleasure in language and rhythm that it underplays (and thus makes real) the rigors it describes.
