Fantasy : Two twins. Travel around the world. 4 books in one. Read in 2015 Around 760 pages

[Nolan]

It’s about I think twins who go two four places around the world and it’s four books in one I think I read it about 2015

[Lobstergirl, au gratin]

Nolan, since we have thousands of people looking for fantasy, please add plot details (derived from what you've already written) to your header. This will help people who only have a few minutes to read through the headers.

[Nolan]

Two twins
Travel around the world
4 books in one
Read in 2015
Around 760 pages

[Nolan]

Read in 2015

[Nolan]

One pair of twins

[Brianna]

Try Witch and Wizard by James Patterson and Cate Teirnan

[Starry_Tech]

We Are Not Eaten by Yaks ? Four books in series, brother and sister who must travel around to solve a secret about their parents.

Nolan it might help if those details were provided in the header, as Loberstergirl mentioned, instead of the comments

[Kate]

Nolan ~~
I added plot details to your header. This enables people to better understand your search, and more likely to recognize your book.

[Blue]

Was this book ever found? It sounds interesting.

[Blue]

Dragonlance Chronicles