Perhaps you should try some spelling variations:
"dong cach noi snippets" » "dong cac noi snippets", "dong bach noi snippets", "phong cach noi snippets", "dong cach thoi snippets", "dong hanh noi snippets", "dong anh noi 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 ("dong cach noi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a code snippets") OR ("dong cach noi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( dong cach noi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("dong cach noi snippets"))) or ("locating bug code snippets"))*.