Perhaps you should try some spelling variations:
"khang trinh java snippets" » "hanh trinh java snippets", "khang sinh java snippets", "kha trinh java snippets"
"dong luc cong snippets" » "nang luc cong snippets", "dong luoc cong snippets", "dong duc cong snippets", "dong luc dong 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: (((("khang trinh java snippets") or ("dong luc cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khang trinh java snippets") OR ("dong luc cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khang trinh java snippets ) or ( dong luc cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khang trinh java snippets") or ("dong luc cong snippets"))) or ("locating bug code snippets"))*.