Collocations for combination - noun

ideal, perfect, right, unbeatable, winning
The band played with a winning combination of gusto and precision.

attractive (esp. BrE), delicious, good, happy, interesting, potent, powerful
amazing, curious, odd, rare, strange, unique, unusual
dangerous, deadly, lethal
High debt and low earnings are a lethal combination.

colour/color
an unusual colour/color combination

in combination (with)
The materials can be used singly or in combination.
Hepatitis D exists only in combination with the hepatitis B virus.

combination of
a delicious combination of herbs and spices