Perhaps you should try some spelling variations:
"hoc lanh tranh snippets" » "hoc canh tranh snippets", "hoc lan tranh snippets", "hoc hanh trinh snippets", "hoc anh tranh snippets", "hoc hanh tranh snippets", "hoc danh tranh snippets", "hoc lanh tranh 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: (((("hoc lanh tranh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc lanh tranh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc lanh tranh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc lanh tranh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.