Perhaps you should try some spelling variations:
"dong cac code snippets" » "duong cac code snippets", "dong bac code snippets", "dung cac code snippets", "dong cac cong snippets", "dong cac co snippets", "dong cac che snippets"
"van anh code snippets" » "van anh co snippets", "van anh cong snippets", "van thanh code snippets", "van minh code snippets", "tuan anh code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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: (((("dong cac code snippets") or ("van anh code snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cac code snippets") OR ("van anh code snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( dong cac code snippets ) or ( van anh code snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cac code snippets") or ("van anh code snippets"))) or ("locating bug code slippers"))*.