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