Perhaps you should try some spelling variations:
"va phan code snippets" » "va phan cong snippets", "va phan co snippets", "va phan che snippets", "van phan code snippets", "va phat code snippets", "va phap code snippets", "va phan code slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho 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: "((((\"va phan code snippets\") OR (\"dung cho code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( va phan code snippets ) OR ( dung cho code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("va phan code snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets"))*.