Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"so danh cung snippets" » "so canh cung snippets", "so doanh chung snippets", "so dinh cuong snippets", "do danh cung snippets", "so sanh cung snippets", "so dan cung 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: (((("so danh cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("so danh cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( so danh cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("so danh cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.