Perhaps you should try some spelling variations:
"cong luong code snippets" » "cong thuong code snippets", "nang luong code snippets", "cong dong code snippets", "cong luong cong snippets", "cong luong che snippets"
"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"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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 van code snippets") or ("cong luong 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 ("cong luong code snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( trinh van code snippets ) or ( cong luong code snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh van code snippets") or ("cong luong code snippets"))) or ("locating bug code slippers"))*.