Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trinh van chinh slippers" » "trinh han chinh slippers", "trinh quan chinh slippers", "trinh toan chinh slippers", "trinh va chinh slippers", "trinh van thinh slippers", "trinh hanh chinh slippers", "trinh van chinh slippery", "trinh van chinh 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 ("trinh van chinh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trinh van chinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh van chinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh van chinh slippers"))) or ("locating bug code snippets"))*.