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