Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"duong mat data slippers" » "duong ma data slippers", "luong mat data slippers", "duong manh data slippers", "duong fast data slippers", "duong a data slippers", "duong mat dan slippers", "duong mat data slippery", "duong mat data 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 ("duong mat data slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("duong mat data slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( duong mat data slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("duong mat data slippers"))) or ("locating bug code snippets"))*.