Perhaps you should try some spelling variations:
"dang hanh cad snippets" » "dang thanh cad snippets", "ban hanh cad snippets", "dang van cad snippets", "dang hanh cac snippets", "dang hanh cat snippets", "dang hanh cap snippets"
"using a code snippets" » "using a core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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

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