I will try to grammatically correct your note without changing much of the sentences around. That way, the point/meaning of the sentence is still there - just minus the errors. If you have any questions about my corrections, feel free to ask!

Cultural Differences

Guinea Bissau is a small country in Africa. Embalo said that his country is almost the same size as Pekanbaru City. He came to Indonesia to study and he encountered some cultural shocks.
1. Of course, every country has its own staple foods. In Guinea, they also eat rice, chicken and other foods. , but The way they cooking is different as well. He deals with it by bring some breads in the market for almost two weeks and didn’t eat rice. (I am going to assume that you meant Embalo did not want to eat rice so instead, he ate bread for two weeks. Then, your sentence could be changed to: Embalo was not comfortable eating rice. So, for two weeks, he ate bread that he bought from the local market.)
2. In Guinea there will not find somebody who put someone hand in your head. They just have a shake hand. He said people
Coping with Culture Shock
He said that he will not do anything without asking first. He doesn’t take his own initiative, because he knows Indonesia and Guinea have a different rule in.
(I did not quite understand your second point so I could not correct it. You might want to explain more in detail about the differences in the ways people greet each other in Guinea versus how they greet each other in Indonesia.)

-------------------------------------------------------------------------------------------------------------------------
Thailand and Indonesia have similar cultures. When she came to Indonesia to study, Asma stated that there were some culture shocks that she encountered.
1. The foods in Indonesia and Thailand are not very different. Indonesians also eat some spicy, sweet and sour foods. However, the first time Asma came to Indonesia, she just bought food from a foods stall.
2. Muslim in Thailand is just a little, but they are more religious than most Muslim in Indonesia. Shaking hand between man and women in Thailand is not common for a Muslim, but in Indonesia they find most Muslim people can do it. (The Muslim population in Thailand is not big, but they are more religious than the Muslim population in Indonesia. Shaking hands between a man and a woman in Thailand is not common for Muslims. However, in Indonesia, it was very common amongst the Muslim people.)
3.It is hard to distinguish which a Muslim women in Indonesia because not every Muslim woman wears a hijab in Indonesia. In Thailand, all Muslim women wear a hijab.
4.In Thailand, it is easy to find a trash can because there is a trash can almost every where one goes.