Peb txoj kev lag luam txij li thaum nws pib pib, feem ntau yog cov khoom lag luam zoo nkauj thiab ua kom zoo dua qub cov neeg tsim khoom lag luam - Peb ntseeg tias ib pab neeg nyiam, pab pawg tshiab yuav muaj peev xwm tsim kev ua haujlwm zoo thiab sib txuas tau zoo nrog koj sai sai. Thov koj xav tiv tauj peb kom paub meej ntxiv. Cov khoom yuav muab rau thoob plaws lub ntiaj teb, xws li Tebchaws Europe, Nepal, Siatakia, Bigakia, Setones, nqi zog rau peb cov neeg siv khoom. Txaus siab thiab qhov zoo rau txhua tus neeg siv khoom yog peb qhov tseem ceeb. Peb tsom mus rau txhua qhov kev txiav txim ntawm kev txiav txim rau cov neeg siv khoom txog thaum lawv tau txais cov khoom muaj kev nyab xeeb thiab suab nrog kev thauj khoom zoo thiab tus nqi. Nyob ntawm qhov no, peb cov khoom muag tau muag zoo heev hauv cov teb chaws hauv Africa, Mid-East thiab Southeast Asia.