Perhaps you should try some spelling variations:
"cong tac cot snippets" » "cong ty cot snippets", "cong tac co snippets", "cong cac cot snippets", "cong tac chon snippets"
"dung ung java snippets" » "dung trung java snippets", "dung quang java snippets", "dung chung java snippets", "dung using java snippets", "dung ngu java snippets", "dung ung va 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 tac cot snippets") or ("dung ung java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong tac cot snippets") OR ("dung ung java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tac cot snippets ) or ( dung ung java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tac cot snippets") or ("dung ung java snippets"))) or ("locating bug code snippets"))*.