Perhaps you should try some spelling variations:
"dung dat cheng snippets" » "dung dat hang snippets", "dung dat phong snippets", "dung va cheng snippets", "dung tai cheng snippets", "dung dat cheng 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"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung dat cheng snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung dat cheng snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung dat cheng snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.