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