Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han danh co snippets" » "van danh co snippets", "phan dang co snippets", "nhan dang co snippets", "han danh cho snippets", "han doanh co snippets", "han anh co 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: (((("han danh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han danh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han danh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han danh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.