Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nom dong cua snippets" » "nam dong cua snippets", "ngoc dong cua snippets", "nhtm dong cua snippets", "nom dung cua snippets", "nom cong cua snippets", "nom huong cua 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: (((("nom dong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nom dong cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nom dong cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nom dong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.