Perhaps you should try some spelling variations:
"dac xuan trinh slippers" » "dac qua trinh slippers", "dac xuan dinh slippers", "dac xuan kinh slippers", "dao xuan trinh slippers", "bach xuan trinh slippers", "dang xuan trinh slippers", "dac xuan trinh slippery", "dac xuan 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: (((("dac xuan 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: (((("dac xuan trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac xuan trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac xuan trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.