Perhaps you should try some spelling variations:
"trinh van code snippets" » "trinh han code snippets", "trinh quan code snippets", "trinh toan code snippets", "trinh van de snippets", "trinh van hoe snippets", "trinh van cong snippets"
"dung lam code snippets" » "dung luan code snippets", "dung tai code snippets", "dung dat code snippets", "dung lbm code snippets", "dung lam co snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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

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