Perhaps you should try some spelling variations:
"dung chu trong snippets" » "dung chu trang snippets", "dung cay trong snippets", "dung tu trong snippets", "dung chau trong snippets", "dung cho trong snippets", "dung cu trong snippets", "dung chu trong slippers"
"using _ code snippets" » "using _ code slippers"
"locating bug code snippets" » "locating bug code slippers", "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 _ code snippets") or ("dung chu trong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using _ code snippets") OR ("dung chu trong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using _ code snippets ) or ( dung chu trong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using _ code snippets") or ("dung chu trong snippets"))) or ("locating bug code snippets"))*.