Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong duc du snippets" » "duong duc du snippets", "luong cuoc du snippets", "luong dich du snippets", "luong duc duy snippets", "luong cuc du snippets", "luong duc 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: (((("luong duc 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: (((("luong duc du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong duc du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong duc du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.