Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh hoa de snippets" » "trinh do de snippets", "trinh han de snippets", "trinh khoa de snippets", "trinh hoa he snippets", "trinh hoa du 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: (((("trinh hoa de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh hoa de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh hoa de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh hoa de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.