Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"san chi cac snippets" » "van chi cac snippets", "luan chi cac snippets", "toan chi cac snippets", "san cho cac snippets", "san chi cuc snippets", "san chon cac 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: (((("san chi 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: (((("san chi cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san chi cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san chi cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.