Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho giao can snippets" » "co giao can snippets", "cho dao can snippets", "hoc giao can snippets", "cho giao dan snippets", "cho giao nhan snippets", "cho giao cong 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 giao can 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 giao can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho giao can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho giao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.