Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong goi bo snippets" » "cong noi bo snippets", "cong soi bo snippets", "dong goi bo snippets", "cong goi bao snippets", "cong doi bo 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 goi bo 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 goi bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong goi bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong goi bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.