Perhaps you should try some spelling variations:
"dong trinh duoc snippets" » "cong trinh duoc snippets", "dong tinh duoc snippets", "dong tranh duoc snippets", "dong trinh doc snippets", "dong trinh duc snippets", "dong trinh quoc snippets", "dong trinh duoc 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: (((("dong trinh duoc snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong trinh duoc snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong trinh duoc snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong trinh duoc snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.