Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong lon cot snippets" » "cong luong cot snippets", "cong dong cot snippets", "cong cong cot snippets", "cong lon con snippets", "cong tong cot snippets", "cong lon cuoc 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 lon cot 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 lon cot snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong lon cot snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong lon cot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.