Perhaps you should try some spelling variations:
"danh thang ca snippets" » "danh thanh ca snippets", "dinh thang ca snippets", "nhanh thang ca snippets", "danh thang cua snippets", "danh hang ca snippets", "danh tang ca snippets"
"dung java java snippets" » "dung va java snippets"
"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: (((("danh thang ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh thang ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh thang ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh thang ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.