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