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