"unsuccessful result" is correct and usable in written English.
For example, you could use it in a sentence such as: "The experiment yielded an unsuccessful result."
Other pieces in the show produced similarly disconcerting, and some might say unsuccessful, results.
Before the 1890s Gauguin flattened his imagery with sometimes unsuccessful results, but throughout that decade his "primitivism" became less forced.
Later in the century a foreign attempt at the Northeast Passage, although unsuccessful, resulted in substantial new discoveries.
It was the rotting Ottoman remains that the British occupied (a big eye on the oil) and started modernising (that Blairish word) after the first world war, with largely unsuccessful results that culminated in Saddam Hussein, from a pro-Nazi clan in Tikrit, a city now occupied by Isis.
The United States under-20 national team is set to open its World Cup qualifying tournament on Monday against Haiti in Puebla, Mexico, and the pressure is mounting on the team to reverse a recent string of unsuccessful results for American men at the youth level.
Surgically unsuccessful results led to cessation of device development.
Unsuccessful results are also obtained, such as kim and schoolbus.
Disappointed by unsuccessful results achieved with HD, Haas gave up his trials in 1928.
However, these attempts proved unsuccessful, resulting in hemolysis, elevated pulmonary artery pressure, and metabolic acidosis, among other negative effects.
Many exceptional scenarios, i.e. scenarios with unsuccessful results, can be easily extracted from the diagram of Fig. 13.
