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