hunt for 词组在字典里有 http://idioms.thefreedictionary.com/hunt+for
两个解释
1. to chase someone or something for sport.
例句 The hunter hunted for grouse on the game preserve. Frank likes to hunt
for deer.
2. to look for someone or something.
例句 I am hunting for someone to help me with the piano. lam hunting for a
new piano.
希拉里找温家宝显然不是寻求帮助，更符合第一个解释：追，隐含的目的是攻击。
再给各例子，有个电影叫he Hunt for Red October （http://www.imdb.com/title/tt0099810/）
剧情是：In 1984, the USSR's best submarine captain in their newest sub
violates orders and heads for the USA. Is he trying to deflect, or to start
a war?
这里面找Red October是什么目的？大家自己猜吧。
左逼不要洗地了，先查字典再说。
