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