Perhaps you should try some spelling variations:
"luc quan trinh slippers" » "luc qua trinh slippers", "luc quan tinh slippers", "luc xuan trinh slippers", "luc luan trinh slippers", "tac quan trinh slippers", "qua quan trinh slippers", "luc quan trinh slippery", "luc quan trinh 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: (((("luc quan trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc quan trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc quan trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc quan trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.