\documentclass{article}
\usepackage{unicode-math}
\setmainfont[Extension = .ttf]{DejaVuSerif}
\setmathfont[Extension = .ttf]{DejaVuSerif}

\begin{document}

fences:
$\left|\left\{\left[\left(\frac{1}{2}\right)\right]\right\}\right|$

radicals: $\sqrt{\frac{\frac{1}{2}}{\frac{3}{4}}} +
           \sqrt[5]{\frac{\frac{6}{7}}{\frac{8}{9}}}$

display operators: 
$\sum \displaystyle \sum$ ;
$\prod \displaystyle \prod$ ;
$\coprod \displaystyle \coprod$ ;
$\bigoplus \displaystyle \bigoplus$ ;
$\bigotimes \displaystyle \bigotimes$ ;
$\bigodot \displaystyle \bigodot$ ;
$\bigcup \displaystyle \bigcup$ ;
$\bigcap \displaystyle \bigcap$ ;
$\biguplus \displaystyle \biguplus$ ;
$\bigsqcup \displaystyle \bigsqcup$ ;
$\bigvee \displaystyle \bigvee$ ;
$\bigwedge \displaystyle \bigwedge$ ;
$\int \displaystyle \int$ ;
$\oint \displaystyle \oint$ ;
$\iint \displaystyle \iint$ ;
$\iiint \displaystyle \iiint$ ;
$\iiiint \displaystyle \iiiint$

primes (ssty feature): 0' $0'$ ; 0'' $0''$ ; 0''' $0'''$

mathbf: $\mathbf{abcdefghijklmnopqrs}$

scr $\mathscr{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

bfscr $\mathbfscr{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

bb $\mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

frak $\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

bffrak $\mathbffrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

sf $\mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

bfsfup $\mathbfsfup{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

sfit $\mathsfit{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

bfsfit $\mathbfsfit{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

bf $\mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

bfit $\mathbfit{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

tt $\mathtt{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$

\end{document}