Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh len _ slippers" » "trinh den _ slippers", "trinh le _ slippers", "trinh ven _ slippers", "trinh len _ slippery", "trinh len _ grippers"
"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 len _ slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh len _ slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh len _ slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh len _ slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.