Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gao toan chi snippets" » "bao toan chi snippets", "gioi toan chi snippets", "bai toan chi snippets", "gao toan cao snippets", "gao tai chi snippets", "gao luan chi 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: (((("gao toan chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gao toan chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gao toan chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gao toan chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.