Perhaps you should try some spelling variations:
"hoc tinh java snippets" » "hoc trinh java snippets", "hoc think java snippets", "hoc tinh va snippets", "hoc sinh java snippets", "hoc kinh java snippets", "hoc tinh java slippers"
"dung cua code snippets" » "dung luan code snippets", "dung cho code snippets", "dung cua cong snippets", "dung cua co snippets", "dung cfd code snippets", "dung cua 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: (((("hoc tinh java snippets") or ("dung cua code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc tinh java snippets") OR ("dung cua code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc tinh java snippets ) or ( dung cua code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc tinh java snippets") or ("dung cua code snippets"))) or ("locating bug code snippets"))*.