Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hang ca snippets" » "cong thang ca snippets", "cong hung ca snippets", "cong lang ca snippets", "cong hang va snippets", "cong nang cao snippets", "cong hang tai 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 hang ca 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 hang ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hang ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.