Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong tri cong snippets" » "cong ti cong snippets", "dong tri cong snippets", "cong tai cong snippets", "cong thi cong snippets", "cong trien 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: (((("cong tri 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: (((("cong tri cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tri cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tri cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.