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