Perhaps you should try some spelling variations:
"trinh tin han snippets" » "trinh kinh han snippets", "trinh toan han snippets", "trinh tu han snippets", "trinh tin phan snippets", "trinh tin ha snippets", "trinh tieng han snippets", "trinh tin han slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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 tin han snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh tin han snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tin han snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tin han snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.