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