Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tu giay dan slippers" » "tu gian dan slippers", "tu giay van slippers", "tu giao dan slippers", "tu giac dan slippers", "cau giay dan slippers", "tu giay dan slippery", "tu 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: (((("tu 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: (((("tu giay dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu giay dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu giay dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.