Perhaps you should try some spelling variations:
"duong java java snippets" » "duong va java snippets"
"dung cfd core snippets" » "dung cho core snippets", "dung cua core snippets", "dung co core snippets", "dung cfd code snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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: "((((\"duong java java snippets\") OR (\"dung cfd core snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( duong java java snippets ) OR ( dung cfd core snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("duong java java snippets") OR ("dung cfd core snippets"))) OR ("locating bug code snippets"))*.