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