Perhaps you should try some spelling variations:
"duoc chat khoa snippets" » "doc chat khoa snippets", "duoc pham khoa snippets", "hoc chat khoa snippets", "duoc chat hoa snippets", "duoc chai khoa snippets", "duoc khat khoa snippets", "duoc chat khoa 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: (((("duoc chat khoa snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc chat khoa snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc chat khoa snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc chat khoa snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.