Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong anh canh snippets" » "hong anh canh snippets", "dong thanh canh snippets", "hoang anh canh snippets", "dong anh anh snippets", "dong anh danh snippets", "dong anh thanh 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 anh canh 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 anh canh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong anh canh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong anh canh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.