Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong nha chu snippets" » "cong nhan chu snippets", "cong nhat chu snippets", "cong ha chu snippets", "cong nha cu snippets", "cong nha chung snippets", "cong nhan chua 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: (((("cong nha 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: (((("cong nha chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong nha chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong nha chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.