Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"nang sua cong snippets" » "nang suat cong snippets", "nang dua cong snippets", "nang su cong snippets", "nang cua cong snippets", "nang qua 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: (((("nang sua 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: (((("nang sua cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang sua cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang sua cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.