have such zend query:
$select = $this->_table ->select() ->where(\'title LIKE ?\', \'%\'.$searchWord.\'%\')
$this->_table->select()->orWhere($condition);
To build more complexe queries (i.g. sub-conditions) you might have to use $this->table->getAdapter()->quoteInto() and write your SELECT manually.
$this->table->getAdapter()->quoteInto()