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