Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co trinh toc snippets" » "co trinh doc snippets", "co trinh toan snippets", "co trinh thuc snippets", "co tranh toc snippets", "cong trinh toc snippets", "tao trinh toc 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: (((("co trinh toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co trinh toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co trinh toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co trinh toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.