Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong cua toi snippets" » "dung cua toi snippets", "cong cua toi snippets", "huong cua toi snippets", "dong cua hoi snippets", "dong cua moi snippets", "dong cua loai 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: (((("dong cua toi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cua toi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cua toi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cua toi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.