Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong tu hon snippets" » "dong luc hon snippets", "thong tu hon snippets", "dong tai hon snippets", "dong tu chon snippets", "dong tuc hon snippets", "dong tu hoc 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: (((("dung java java snippets") or ("dong tu hon snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dong tu hon snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dong tu hon snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dong tu hon snippets"))) or ("locating bug code snippets"))*.