$re = '/[0-9]{1,}/2020/\w{0,}/SPV/m';
$str = 'Số: 2479/2020/ECOM/SPV - tabiimlianoi
Số: 2479/2020//SPV - tabiimlianoi
1712/2020/HDDVBC/SPV - VIMO - SPX';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php