Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh nen su slippers" » "trinh den su slippers", "trinh len su slippers", "trinh ven su slippers", "trinh nien su slippers", "trinh nen su slippery", "trinh nen su 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 nen su 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 nen su slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh nen su slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh nen su slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.