Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc giay dan slippers" » "toc tay dan slippers", "tac gia dan slippers", "hoc giao dan slippers", "toc gian dan slippers", "toc giay van slippers", "toc giao dan slippers", "toc giay dan slippery", "toc giay dan 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: (((("toc giay dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc giay dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc giay dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc giay dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.