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