Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung tao cao snippets" » "dung tai cao snippets", "dung bao cao snippets", "dung tay cao snippets", "dung toan cao snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung tao cao snippets\") OR (\"hang java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung tao cao snippets ) OR ( hang java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung tao cao snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets"))*.