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