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