Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thanh nam de snippets" » "hanh nam de snippets", "thanh tam de snippets", "thanh pham de snippets", "thanh nam da snippets", "thanh nam do snippets", "thanh nam he 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: (((("thanh nam de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thanh nam de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thanh nam de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thanh nam de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.