Perhaps you should try some spelling variations:
"luong cho chat snippets" » "luong cho code snippets", "luong chu chat snippets", "luong khoa chat snippets", "luong theo chat snippets", "luong cao chat snippets", "luong cho phat snippets", "luong chao chao snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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: (((("luong cho chat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong cho chat snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luong cho chat snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong cho chat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.