Perhaps you should try some spelling variations:
"using rate code snippets" » "using waste code snippets", "using data code snippets", "using raw code snippets", "using rate core snippets", "using rate code slippers"
"dung cac hieu snippets" » "luong cac hieu snippets", "dung cho hieu snippets", "dung tai hieu snippets", "dung cac chieu snippets", "dung cao hieu snippets", "dung cac kieu snippets", "dung cac hieu slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using rate code snippets") or ("dung cac hieu snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using rate code snippets") OR ("dung cac hieu snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using rate code snippets ) or ( dung cac hieu snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using rate code snippets") or ("dung cac hieu snippets"))) or ("locating bug code snippets"))*.