Write 1-3 word(s) separated by spaces and select search type, for example:

Semantically similar words	"китап" "куллан" "китап, дәфтәр"
Word analogy	"эт - хайван, карга - " "умарта_корт - бал, сыер - "
Indicator of two words similarity	"эт, бүре" "урындык, сыер"

You can find more information about it here (in Tatar language).