id	keyword
aesr-7404	tea
aesr-7404	land
aesr-7404	efficiency
aesr-7404	district
aesr-7404	quang
aesr-7404	binh
aesr-7404	use
aesr-7404	economic
aesr-7404	cultivation
aesr-7404	production
aesr-7404	soil
aesr-7404	area