Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang vat code snippets" » "dang van code snippets", "dong vat code snippets", "dang nhat code snippets", "dang rate code snippets", "dang vat co snippets", "dang vat de snippets"
"locating bug core snippets" » "locating bug code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dang vat code snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dang vat code snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( dang vat code snippets ) OR ( dung java java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vat code snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))*.