Perhaps you should try some spelling variations:
"van duong code snippets" » "van duong co snippets", "van duong cong snippets", "van duong che snippets", "van dong code snippets", "van dung code snippets", "van phong code snippets", "van duong code slippers"
"using low code snippets" » "using low cost snippets", "using lbm code snippets", "using low dose snippets", "using low code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using low code snippets\") OR (\"van duong code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using low code snippets ) OR ( van duong code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using low code snippets") OR ("van duong code snippets"))) OR ("locating bug code snippets"))*.