"Apples and pears contain sugar."
Translation:Jablka a hrušky obsahují cukr.
Obsahujou is Common Czech, it is not considered correct in official literary Czech. Correct is obsahují.
And the word order is wrong. It would be acceptable for a question, but for a declarative sentence it is wrong. It is connected with the fact that the nominative and accusative are sometimes the same, the order matters than as it does in English.