Perhaps you should try some spelling variations:
"trinh phap cong snippets" » "trinh phan cong snippets", "trinh han cong snippets", "trinh chat cong snippets", "trinh pham cong snippets", "trinh phap phong snippets"
"dung trong ca snippets" » "dung trong cac snippets", "dung trong van snippets", "dung trong nha 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: (((("trinh phap cong snippets") or ("dung trong ca snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh phap cong snippets") OR ("dung trong ca snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh phap cong snippets ) or ( dung trong ca snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh phap cong snippets") or ("dung trong ca snippets"))) or ("locating bug code snippets"))*.