Perhaps you should try some spelling variations:
"giang thuc hanh snippets" » "gia thuc hanh snippets", "gian thua hanh snippets", "giang thi hanh snippets", "giang thuc hanh slippers", "giang thuc thanh snippets", "giang thuc anh snippets", "giang thuc hinh snippets"
"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: (((("dung java java snippets") or ("giang thuc hanh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("giang thuc hanh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( giang thuc hanh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("giang thuc hanh snippets"))) or ("locating bug code snippets"))*.