Ibiryo byafunzwe ni ingenzi mu ngo nyinshi no mubucuruzi bitewe nuburyo bworoshye, kuramba kuramba, hamwe nubushobozi bwo kugumana intungamubiri zingenzi mugihe runaka. Waba ubitse ibintu byihutirwa, gutegura ifunguro, cyangwa ushaka gusa gukoresha umwanya wawe wububiko, k ...
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