The phrase "ability to combine a" is correct and usable in written English.
It can be used when discussing someone's skill or capacity to merge or integrate different elements or ideas.
Example: "Her ability to combine a variety of artistic styles makes her work truly unique."
Alternatives: "capacity to merge a" or "skill in integrating a".
He was known for his ability to combine a practical knowledge of politics with an enduring commitment to the poor and the working class.
A minor in Global Studies with African Studies Specialization offers students the ability to combine a focus on Africa with their major in any other discipline.
Obama has shown a good ability to combine a realist, power-politics mind-set with a warm appreciation of democracy and human rights.
Ms. Hulme's success lies in her ability to combine a "slick international aesthetic with an exaggerated British style," said Sasha Sarokin, Net-A-Porter's international accessories manager.
The ability to combine a huge dome, raised up high on its peristyle with a large nave space below, creates the surprising sensation of weightlessness and forms the most famous landmark on London's horizon.
I'd say the source of Littlewood's genius, and one of the reasons for Oh What a Lovely War's instant success, was her ability to combine a European aestheticism with a deeply English love of popular theatre.
One of Griffin's strengths is his ability to combine an above-average scoring rate while also carrying a heavy offensive load, a rare but incredibly value skill.
One of the achievements of Masiel's book, however, is that with one or two exceptions he doesn't turn his manic characters into caricatures; he resembles the short-story writer Thom Jones in his ability to combine an eye for madness and absurdity with a deep feeling for the lives of people in extreme situations.
Similar to Coin in the U.S., the headline feature is the ability to combine an unlimited number of bank cards into one physical payment card.
His ability to combine an interest in the academic study of law (he was acting as Lent Reader at Lincoln's Inn as late as 1514), together with Greek and patristic studies, while pursuing an increasingly busy legal career, is remarkable.
Ad Age highlighted Brule's ability to combine an "uncommon mix of intelligence, visual flair and substance on global affairs, business, culture and design" into the magazine.
