Perhaps you should try some spelling variations:
"dong von cong snippets" » "dung von cong snippets", "dong co cong snippets", "dong hoc cong snippets", "dong van cong snippets", "dong bon cong snippets", "dong son cong snippets"
"dung a data snippets" » "dung va data snippets", "dung ha data snippets", "dung ai data snippets", "dung _ data snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dung a data snippets") or ("dong von cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung a data snippets") OR ("dong von cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung a data snippets ) or ( dong von cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung a data snippets") or ("dong von cong snippets"))) or ("locating bug code snippets"))*.