Perhaps you should try some spelling variations:
"dong tranh java snippets" » "dong thanh java snippets", "dong trinh java snippets", "trong tranh java snippets", "dong tranh va snippets"
"dung cho cong snippets" » "dung cao cong snippets", "dung cua cong snippets", "dung cac cong 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: (((("dong tranh java snippets") or ("dung cho cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong tranh java snippets") OR ("dung cho cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tranh java snippets ) or ( dung cho cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tranh java snippets") or ("dung cho cong snippets"))) or ("locating bug code snippets"))*.