Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam viet cho snippets" » "lam viec cho snippets", "nam viet cho snippets", "cam viet cho snippets", "lam viet co snippets", "lam viet theo 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: (((("lam viet cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lam viet cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam viet cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam viet cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.