Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan ngoc da snippets" » "hoang ngoc da snippets", "tran ngoc da snippets", "van ngoc da snippets", "doan ngoc ha snippets", "doan ngoc de snippets", "doan ngoc du 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: (((("doan ngoc 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: (((("doan ngoc da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan ngoc da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan ngoc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.