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