Vietnam	vietnam	0.1374
co-operation	co oper	0.1374
Russia	rus	0.1374
countries	countr	0.1374
field	field	0.0497
oil	oil	0.0497
partnership	partnership	0.0081
gas	ga	0.0081
Hanoi	han	0.0081
development	developm	0.0081
premiere	prem	0.0081
XXIe century	xx centur	0.0081
company	compan	0.0081
economic	econom	0.0081
oil and gas	oil and ga	0.0081