Perhaps you should try some spelling variations:
"dung tnhanh code snippets" » "dung thanh code snippets", "dung nhan code snippets", "dung thang code snippets"
"anh trac core snippets" » "sinh trac core snippets", "anh tuan core snippets", "anh thuc core snippets"
"locating bug code 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: (((("anh trac core snippets") or ("dung tnhanh code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh trac core snippets") OR ("dung tnhanh code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh trac core snippets ) or ( dung tnhanh code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh trac core snippets") or ("dung tnhanh code snippets"))) or ("locating bug code snippets"))*.