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