Perhaps you should try some spelling variations:
"luong do chat snippets" » "luong do code snippets", "luong dao chat snippets", "cuong do chat snippets", "luong du chat snippets", "luong doc chat snippets", "luong don chat snippets", "luong do nhat 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 do 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 do chat snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luong do chat snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong do chat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.