Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung tu minh slippers" » "dung thu minh slippers", "dung tru minh slippers", "dung cu minh slippers", "dung vu minh slippers", "dung thi minh slippers", "dung tu minh slippery", "dung tu minh 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 tu minh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tu minh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tu minh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tu minh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.