Perhaps you should try some spelling variations:
"trong che han snippets" » "trong cho han snippets", "trong chien han snippets", "trong cham han snippets", "trong chu han snippets", "trong che thanh snippets", "trong che pham snippets", "trong che han slippers"
"dung ung java snippets" » "dung trung java snippets", "dung quang java snippets", "dung chung java snippets", "dung using java snippets", "dung ngu java snippets", "dung ung va snippets", "dung ung java slippers"
"locating bug code snippets" » "locating bug code slippers", "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 ung java snippets") or ("trong che han snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ung java snippets") OR ("trong che han snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ung java snippets ) or ( trong che han snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ung java snippets") or ("trong che han snippets"))) or ("locating bug code snippets"))*.