To find company reports, use the "company search" window on the left side of the home page. You can limit your search to companies in a specific country. Make sure the "International Company Database" box on the left side is checked. Then, click on the "Country" drop-down menu on the right side, select the name, and click search.
Once you have found a company and reached its "company details" page; click the "filings" tab. You will see a table containing details of the company's recent filings. The icons in the "view documents" tab will provide you with various formats for viewing the filings.
If the filing you are looking for is more than 90 days old; you will need to use the EDGAR search function. In the "company search" section; select the Government Filings tab near the top of the page and enter a company name or ticker symbol.
In the "filing date search" section; specify a time frame for your search. Finally; in the "filing type" section; specify what type of filings you are interested in. (Again; Form 10-K is the government-required annual report for publicly-traded companies.)
Mergent Online also has financial ratios. Chad Boenniger at Ohio State has a good video describing how to search the database for individual companies or creating reports which compare ratios of company peers within industries for checking your work when making ratio calculations.