Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang vat cac snippets" » "dang van cac snippets", "dong vat cac snippets", "dang nhat cac snippets", "dang vat cach snippets", "dang va cac snippets", "dang sat cac 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 cac 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 cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang vat cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vat cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.