Perhaps you should try some spelling variations:
"manh khai trinh snippets" » "manh kha trinh snippets", "manh thai tinh snippets", "manh nhai tinh snippets", "minh khai trinh snippets", "manh hai trinh snippets", "dang khai trinh snippets", "manh khai trinh 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: (((("manh khai trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("manh khai trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( manh khai trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("manh khai trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.