Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung le hanh slippers" » "dung len hanh slippers", "dung he hanh slippers", "dung de hanh slippers", "dung le thanh slippers", "dung le khanh slippers", "dung le anh slippers", "dung le hanh slippery", "dung le hanh 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 le hanh 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 le hanh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung le hanh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung le hanh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.