Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trinh cam code snippets" » "trinh cham code snippets", "trinh cau code snippets", "trinh tam code snippets", "trinh cfd code snippets", "trinh lbm code snippets"
"locating bug core snippets" » "locating bug 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: "((((\"dung java java snippets\") OR (\"trinh cam code snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( trinh cam code snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("trinh cam code snippets"))) OR ("locating bug core snippets"))*.