Perhaps you should try some spelling variations:
"trong qua dan slippers" » "trong quan dan slippers", "thong qua dan slippers", "trong nha dan slippers", "trong qua danh slippers", "trong qua ban slippers", "trong cua dan slippers", "trong qua dan slippery", "trong qua dan grippers"
"dung java java snippets" » "dung va java 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: (((("trong qua dan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong qua dan slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong qua dan slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong qua dan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.