Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho can cao snippets" » "cho cac cao snippets", "cho phan cao snippets", "cho cong cao snippets", "cho ca cao snippets", "cho can cau snippets", "cho cay cao 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 can cao 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 can cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho can cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho can cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.