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