Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang ba cong snippets" » "dang bac cong snippets", "dang bai cong snippets", "dang ha cong snippets", "dang ban cong snippets", "dang bia cong snippets", "dang bat cong 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 ba cong 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 ba cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang ba cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang ba cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.