Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hung tan cua snippets" » "hung tran cua snippets", "hung tuan cua snippets", "cung tan cua snippets", "hung than cua snippets", "hung tang cua snippets", "hung toan cua 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: (((("hung tan cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hung tan cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hung tan cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung tan cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.