Perhaps you should try some spelling variations:
"trinh vat data slippers" » "trinh van data slippers", "trinh luat data slippers", "sinh vat data slippers", "trinh fast data slippers", "trinh a data slippers", "trinh tat dat slippers", "trinh vat data slippery", "trinh vat data 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: (((("trinh vat data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh vat data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh vat data slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh vat data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.