Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang khoa vo snippets" » "dung khoa vo snippets", "hang khoa vo snippets", "dang khoi vo snippets", "dang hoa vo snippets", "dang khoa co snippets", "dang khoa hoc 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: (((("dang khoa vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang khoa vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang khoa vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang khoa vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.