grammer有意冇問題

無問題，你也可以在網上搜尋到很多包括「what I thought of is」的句子。

what I thought of was only ...
我所想到的只是 ...

你的句首可以延續如下：

What I thought of was only the bad dream I had last week.

What I thought of was only the kind uncle who played with him.

快去這里*****我每次都是去這里看
仅剭仹务

grammar wise it is OK