Perhaps you should try some spelling variations:
"dang dinh doc snippets" » "dang sinh doc snippets", "dang dieu doc snippets", "van dinh doc snippets", "dang dinh duc snippets", "dang dinh ngoc snippets", "dang trinh doc 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 dinh doc 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 dinh doc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang dinh doc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang dinh doc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.