Perhaps you should try some spelling variations:
"gian cuon cach snippets" » "gian con cach snippets", "gian muon cach snippets", "gian muong cach snippets", "gian cuoc cach snippets", "gian cuon sach snippets", "gian chon cac 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: (((("gian cuon 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: (((("gian cuon cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian cuon cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian cuon cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.