Perhaps you should try some spelling variations:
"luong cac chao snippets" » "luong cac code snippets", "luong cuoc chao snippets", "luong va chao snippets", "luong tai chao snippets", "luong cac chat snippets", "luong chao chao snippets", "luong cac nha 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 cac chao 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 cac chao snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luong cac chao snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong cac chao snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.