Txhua qhov kev tsim khoom tau ua tiav hauv tsev los ntawm kev zam txim rau qhov ua tiav .process tau kuaj xyuas thaum lub sijhawm ua tiav thiab sau cov ntaub ntawv.
Kev tshuaj xyuas: Peb tau nruab nrog cov khoom siv tshuaj xyuas cov khoom muag siab, cov ntsuas hluav taws xob rau peb, cov ntsuas hluav taws xob, kev ntsuas kho qhov muag