Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao danh co snippets" » "cao danh co snippets", "han danh co snippets", "khau dan co snippets", "khao danh cho snippets", "khao doanh co snippets", "khao anh co 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: (((("khao danh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khao danh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao danh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao danh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.