Perhaps you should try some spelling variations:
"tung dan hanh snippets" » "dung dan hanh snippets", "huong dan hanh snippets", "trung dai hanh snippets", "tung dang hanh snippets", "tung dan khanh snippets", "tung dan thanh snippets", "tung dan hanh slippers"
"using a code snippets" » "using a core snippets", "using a code slippers"
"locating bug code snippets" » "locating bug core 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 a code snippets") or ("tung dan hanh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a code snippets") OR ("tung dan hanh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( tung dan hanh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("tung dan hanh snippets"))) or ("locating bug code snippets"))*.