Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan dong cot snippets" » "van dong cot snippets", "dan dung cot snippets", "dao dong cot snippets", "dan dong co snippets", "dan tong cot snippets", "dan dong tot 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: (((("dan dong cot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan dong cot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan dong cot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan dong cot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.