Perhaps you should try some spelling variations:
"dong hoc code snippets" » "dong co code snippets", "dong luc code snippets", "dong hoc co snippets", "dong hoc cong snippets", "dong hoc de snippets", "dong hoc code slippers"
"cong cfd code snippets" » "cong cu code snippets", "cong cua code snippets", "cong cau code snippets", "cong cfd 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: "((((\"dong hoc code snippets\") OR (\"cong cfd code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dong hoc code snippets ) OR ( cong cfd code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dong hoc code snippets") OR ("cong cfd code snippets"))) OR ("locating bug code snippets"))*.