Perhaps you should try some spelling variations:
"creating va hieu snippets" » "creating _ hieu snippets", "creating van hieu snippets", "creating va dieu snippets", "creating cao hieu snippets"
"creating a c snippets" » "creating _ c snippets", "reading a c snippets", "creating a c1 snippets", "creating a co snippets", "creating va c snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: "((((\"creating va hieu snippets\") OR (\"creating a c snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( creating va hieu snippets ) OR ( creating a c snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("creating va hieu snippets") OR ("creating a c snippets"))) OR ("locating bug code snippets"))*.