Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"van trinh java snippets" » "van thinh java snippets", "van tinh java snippets", "dan trinh java snippets"
"dong luc cong snippets" » "nang luc cong snippets", "dong luoc cong snippets", "dong duc cong snippets", "dong luc dong snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van trinh java snippets") or ("dong luc cong snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van trinh java snippets") OR ("dong luc cong snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van trinh java snippets ) or ( dong luc cong snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van trinh java snippets") or ("dong luc cong snippets"))) or ("locating bugs code snippets"))*.