Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap te cong snippets" » "lap tai cong snippets", "lap thi cong snippets", "lap thu cong snippets", "lap ke cong snippets", "lap tu cong snippets", "lap tieu 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: (((("lap te 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: (((("lap te cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap te cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap te cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.