Perhaps you should try some spelling variations:
"luong cac che snippets" » "luong cuoc che snippets", "luong va che snippets", "luong tai che snippets", "luong cac he snippets", "luong cac chien snippets", "luong cac chat snippets"
"dung tin java snippets" » "dong tin java snippets", "luong tin java snippets", "dung tren java snippets", "dung trinh java snippets", "dung think java snippets", "dung tin va 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: (((("luong cac che snippets") or ("dung tin java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong cac che snippets") OR ("dung tin java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong cac che snippets ) or ( dung tin java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong cac che snippets") or ("dung tin java snippets"))) or ("locating bug code snippets"))*.