Perhaps you should try some spelling variations:
"can trinh luan snippets" » "can trinh luat snippets", "can trinh quan snippets", "can trinh han snippets", "can tranh luan snippets", "dan trinh luan snippets", "van trinh luan snippets", "can trinh luan slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "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: (((("can trinh luan snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can trinh luan snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can trinh luan snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can trinh luan snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.