Perhaps you should try some spelling variations:
"dang trinh java snippets" » "dang tinh java snippets", "dan trinh java snippets", "dong trinh java snippets"
"hoang thi cong snippets" » "hoang tai cong snippets", "hoang thien cong 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: (((("dang trinh java snippets") or ("hoang thi cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang trinh java snippets") OR ("hoang thi cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang trinh java snippets ) or ( hoang thi cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang trinh java snippets") or ("hoang thi cong snippets"))) or ("locating bug code snippets"))*.