Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong di can snippets" » "duong dai can snippets", "duong thi can snippets", "duong loi can snippets", "duong di san snippets", "duong di ban snippets", "duong di cau 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: (((("duong di can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong di can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong di can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong di can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.