Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trong toc code snippets" » "trong tuc code snippets", "trong hoc code snippets", "trong tac code snippets", "trong toc co snippets", "trong toc cong snippets", "trong toc ede 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 (\"trong toc code snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( trong toc code snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("trong toc code snippets"))) OR ("locating bug core snippets"))*.