Perhaps you should try some spelling variations:
"hang dan trinh snippets" » "hang dan tinh snippets", "hang van trinh snippets", "hang hanh trinh snippets", "hang dau trinh snippets", "hang ban trinh snippets", "tang dan trinh snippets", "hang dan trinh 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: (((("hang dan trinh snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang dan trinh snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang dan trinh snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang dan trinh snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.