U can always use parquet glue selling at hardware shops for RM 15 or so. The Dunlop glue is widely used during the 80s and due to its 'high' nature, people stopped using it. Plus, it is a health hazard for those with children below ages of 5.

BTW, my company specialized in timber flooring rectifications. We install / rectify any type of timber flooring from solid to engineered and from semi-engineered to laminated. Been doing this for the past 10 years and we have our own in-house workers, machinery and vehicles.