Perhaps you should try some spelling variations:
"van huynh trinh slippers" » "van hanh trinh slippers", "van huynh minh slippers", "van huynh vinh slippers", "van quynh trinh slippers", "manh huynh trinh slippers", "van huynh trinh slippery", "van huynh 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: (((("van huynh 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: (((("van huynh trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van huynh trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van huynh trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.