Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi tra chat snippets" » "phi tran chau snippets", "phi tran nhat snippets", "phi hoa chat snippets", "thi tra chat snippets", "phai trai chat snippets", "thi tran 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 tra 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 tra chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi tra chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi tra chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.