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