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