Perhaps you should try some spelling variations:
"dung kha trinh snippets" » "dung qua trinh snippets", "dung ha tinh snippets", "dung tra trinh snippets", "dung khoa trinh snippets", "dung ha trinh snippets", "dung nha trinh snippets", "dung kha trinh slippers"
"hang java java snippets" » "hang va java snippets", "hang 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: (((("dung kha trinh snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung kha trinh snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung kha trinh snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung kha trinh snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.