Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"may lanh trac slippers" » "may anh trac slippers", "may lanh tranh slippers", "may canh tac slippers", "cay lanh trac slippers", "may tinh trac slippers", "may san trac slippers", "may lanh trac slippery", "may lanh trac 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 ("may lanh trac slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("may lanh trac slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( may lanh trac slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("may lanh trac slippers"))) or ("locating bug code snippets"))*.