Perhaps you should try some spelling variations:
"dong luc trong snippets" » "dong luoc trong snippets", "dong luu trong snippets", "dong cuc trong snippets", "nang luc trong snippets", "dong luc trong slippers"
"dung cuc code snippets" » "dung cua code snippets", "dung cu code snippets", "dung cac code snippets", "dung cfd code snippets", "dung cuc code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("dong luc trong snippets") or ("dung cuc code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong luc trong snippets") OR ("dung cuc code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong luc trong snippets ) or ( dung cuc code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong luc trong snippets") or ("dung cuc code snippets"))) or ("locating bug code snippets"))*.