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