Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"ban can tranh slippers" » "ban canh tranh slippers", "ban tan tran slippers", "ban van ranh slippers", "ban dan tranh slippers", "ban hang tranh slippers", "ban hanh tranh slippers", "ban can tranh slippery", "ban can tranh grippers"
"locating bug code snippets" » "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: (((("dung java java snippets") or ("ban can tranh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("ban can tranh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( ban can tranh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("ban can tranh slippers"))) or ("locating bug code snippets"))*.