Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"thi hieu ca snippets" » "thi chieu ca snippets", "thi hien ca snippets", "thi dieu ca snippets", "thi hieu cac snippets", "thi hieu cua snippets", "thi hieu va 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: (((("thi hieu ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi hieu ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hieu ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hieu ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.