> For the complete documentation index, see [llms.txt](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/ii.-system-features/3.-contact/3.3.-create-contact-filter.md).

# 3.3. Create contact filter

To create a contact filter to search information, users use the advanced filter to search. Learn more [here](/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/ii.-system-features/5.-advanced-filter.md).