Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trong can danh slippers" » "trong canh danh slippers", "trong chan danh slippers", "trong cac danh slippers", "trong van danh slippers", "trong cao danh slippers", "trong cau danh slippers", "trong can danh slippery", "trong can danh 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 ("trong can danh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trong can danh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong can danh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong can danh slippers"))) or ("locating bug code snippets"))*.