Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong dao le snippets" » "dong dat le snippets", "dong giao le snippets", "dong co le snippets", "dong do le snippets", "dong dao ve snippets", "dong hao le 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 dao le 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 dao le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong dao le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dao le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.