đường cái quan 
interprovincial highway, intercountry [ đường ] : (1) route, road, street, path, avenue, lane; (2) sugar
[ cái ] : (1) [CL for most inanimate objects, isolated events]; (2) object, thing; (3) female; (4) main, principle; (5) solid substances in soup (as opposed to nước, the liquid, broth)
[ quan ] : (1) official, officer; (2) franc (unit of currency); (3) coffin; (4) sense
Most Common Compounds Set 1:
Most Common Compounds Set 2 :