Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tieu du snippets" » "hang tieu du snippets", "nhan tieu du snippets", "han dieu du snippets", "han tieu su snippets", "han tiep du snippets", "han tieu dung 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 tieu 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: (((("han tieu du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tieu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tieu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.