$33-14+66:\left(-6\right)$

= $33-14-11$

= $19-11$

= $8$

$26-\left(26-19\right)-5$

= $26-1·7-5$

= $26-7-5$

= $19-5$

= $14$

$\left(0:\left(-3\right)-40:10\right):\left(-4\right)$

= $\left(0-4\right):\left(-4\right)$

= $-4:\left(-4\right)$

= $1$

$-1-27:\left(-3\right)-48:\left(72:\left(-9\right)\right)$

= $-1+9-48:\left(-8\right)$

= $8+6$

= $14$