3 sentences

1. 我不是存心要伤害你的。

   wǒ bù shì cún​xīn yào shāng​hài nǐ de.

   I didn't mean to hurt you.

   Source: Dong Chinese Dictionary

2. 他在人群中瞎哄，存心想制造混乱。

   tā zài rén​qún zhōng xiā​hòng, cún​xīn xiǎng zhì​zào hùn​luàn.

   He was making a scene in the crowd, intentionally trying to cause chaos.

   Source: Dong Chinese Dictionary

3. 作为一个诚实的人，无论遇到什么困难都不应当存心欺谩他人。

   zuò​wéi yī gè chéng​shí de rén, wú​lùn yù​dào shén​me kùn​nan dōu bù yīng​dāng cún​xīn qī mán tā​rén.

   As an honest person, one should not intentionally deceive others, no matter what difficulties are encountered.

   Source: Dong Chinese Dictionary