Russian	rus	0.1374
Vietnamese	vietnam	0.1374
oil	oil	0.1374
Putin	putin	0.0497
companies	compan	0.0497
economy	econom	0.0497
HANOI	han	0.0497
tons of oil	ton of oil	0.0497
head of state	head of st	0.0497
Joint	joint	0.0497
oil produced	oil produc	0.0497
million tons	million ton	0.0497
Russian and Vietnamese	rus and vietnam	0.0497
Russian head	rus head	0.0497
Russian President	rus presid	0.0497