Perhaps you should try some spelling variations:
"cong dung co snippets" » "cuong dung co snippets", "cong dong co snippets", "cong luong co snippets", "cong dung cong snippets", "cong dung cua snippets", "cong dung von snippets"
"dung cho java snippets" » "dung cho jae snippets", "dung cho va snippets", "dung cho sara 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 cho java snippets") or ("cong dung co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cho java snippets") OR ("cong dung co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cho java snippets ) or ( cong dung co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cho java snippets") or ("cong dung co snippets"))) or ("locating bug code snippets"))*.