Perhaps you should try some spelling variations:
"chung cuu cach snippets" » "chung cu cach snippets", "chung cua cach snippets", "chung chou cach snippets", "chung cuu cac snippets", "chung cuoc cach snippets", "chung cuu dac 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: (((("chung cuu cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung cuu cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung cuu cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung cuu cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.