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