Perhaps you should try some spelling variations:
"huong doi trinh snippets" » "huong dan trinh snippets", "trong doi trinh snippets", "dung doi trinh snippets", "huong doc trinh snippets", "huong doi tinh snippets", "huong dong trinh snippets", "huong doi trinh 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 ("huong doi trinh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using _ code snippets") OR ("huong doi trinh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using _ code snippets ) or ( huong doi trinh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using _ code snippets") or ("huong doi trinh snippets"))) or ("locating bug code snippets"))*.