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

Try widening your search to All Fields.

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 ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang vat ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang vat ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vat ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.