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