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