Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong cac toc snippets" » "duong cac toc snippets", "dong bac toc snippets", "dung cac toc snippets", "dong cac toi snippets", "dong cac nuoc snippets", "dong cac thoi 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 cac toc 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 cac toc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cac toc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cac toc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.