Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tong don snippets" » "han song don snippets", "han tong son snippets", "han trong dong snippets", "phan tong don snippets", "nhan tong don snippets", "hanh tong don 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 tong don 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 tong don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tong don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tong don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.