Finding Primary Resources:

The trick to searching Google effectively is to determine the Internet domain you wish to search, and then to perform a focused search using a site limit. To discover top-level Internet domains for other nations, you can consult Domain Name Registries Around the World. 

Here are some sample searches.

1. To find documents from mainland China on human rights, you can use the Domain Name link above to discover that the top-level Internet domain for China is cn. Then, you can construct a Google search like this: site:cn human rights. Looking at the Google results you will notice that gov.cn likely refers to government sites within China. You can refine your search this way: site:gov.cn human rights. Further, since many substantive documents are created in PDF format, you can further restrict your results: site:gov.cn "human rights" filetype:pdf.

2. The primary United Nations domain is un.org. You can search Google's indexing of UN documents following this example: site:un.org "human trafficking" child labour

3. The various agencies of the U.S. government can be effectively searched in the same manner: "human rights" "Indigenous peoples" site:state.gov

"human rights" "Indigenous peoples" site:humanrights.gov filetype:pdf

site:whitehouse.gov "human rights" Latin America

Searching Google Scholar:

A complete description of how to search Google Scholar can be found in the Research Guide:  Google Scholar: Finding Fulltext through U. of Denver Databases