Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khanh nam de snippets" » "hanh nam de snippets", "thanh nam de snippets", "nhanh nam de snippets", "khanh nam da snippets", "khanh nam do snippets", "khanh 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: (((("khanh 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: (((("khanh nam de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khanh nam de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khanh nam de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.