efektivnjích
The term "efektivnjích" appears to be a misspelling or an uncommon variation of a word. In several Slavic languages, including Russian, "efektivnyy" (эффективный) translates to "effective" or "efficient." The ending "-njích" does not conform to standard grammatical structures for this adjective in any widely recognized Slavic language.
It is possible that "efektivnjích" is a dialectal variant, a neologism, or a deliberate stylistic choice in