Perhaps you should try some spelling variations:
"trinh han hao snippets" » "trinh quan hao snippets", "trinh hoan hao snippets", "trinh van hao snippets", "trinh pan hao snippets", "trinh han hao slippers"
"dung rung code snippets" » "dung trung code snippets", "duong rung code snippets", "dung ung code snippets", "dung rung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 han hao snippets") or ("dung rung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh han hao snippets") OR ("dung rung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh han hao snippets ) or ( dung rung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh han hao snippets") or ("dung rung code snippets"))) or ("locating bug code snippets"))*.