Perhaps you should try some spelling variations:
"dang sinh doi snippets" » "dang dinh doi snippets", "khang sinh doi snippets", "dang hanh doi snippets", "dang tinh doi snippets", "dang sinh dai snippets", "dang sinh moi 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: (((("dang sinh doi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang sinh doi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang sinh doi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang sinh doi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.