Perhaps you should try some spelling variations:
"van tao duoc grippers" » "van thao duoc grippers", "vang tao duoc grippers", "van tai duoc grippers", "van tao duc grippers", "van tao quoc grippers", "van tao duoc slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using a snippets") or ("van tao duoc grippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("van tao duoc grippers"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( van tao duoc grippers ))) or ( locating bug code snippets ))*.