Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham nhan cua snippets" » "pham nhan cua snippets", "hat nhan cua snippets", "cam nhan cua snippets", "ham nhat cua snippets", "ham nhan luc snippets", "ham nhan su 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: (((("ham nhan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ham nhan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham nhan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham nhan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.