2 sentences

1. 我的思绪很乱，一时理不出头绪。

   wǒ de sī​xù hěn luàn, yī​shí lǐ bù chū tóu​xù.

   My thoughts are a mess; I can't make head or tail of it for the moment.

   Source: Dong Chinese Dictionary

2. 经过一番调查，这件案子终于有了一点头绪。

   jīng​guò yī fān diào​chá, zhè jiàn àn​zi zhōng​yú yǒu le yī​diǎn tóu​xù.

   After some investigation, there is finally a lead in this case.

   Source: Dong Chinese Dictionary