Perhaps you should try some spelling variations:
"khanh van chinh snippets" » "thanh van chinh snippets", "khanh vinh chinh snippets", "hanh va chinh snippets", "khanh va chinh snippets", "khanh van thinh snippets", "khanh hanh chinh snippets", "khanh van chinh 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: (((("khanh van chinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khanh van chinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khanh van chinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khanh van chinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.