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