Perhaps you should try some spelling variations:
"missing data code snippets" » "using data code snippets", "missing rate code snippets"
"dang van hoc snippets" » "hoang van hoc snippets", "hang va hoc snippets", "dang van hoa snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("missing data code snippets") or ("dang van hoc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("missing data code snippets") OR ("dang van hoc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( missing data code snippets ) or ( dang van hoc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("missing data code snippets") or ("dang van hoc snippets"))) or ("locating bug code snippets"))*.