[en] Search for new elements is one of the major research activity in physics and chemistry over several decades. Elements up to atomic number Z = 118 have been discovered by fusion of two nuclei. However attempts to synthesis elements beyond Z = 118 were unsuccessful till date. This demands the necessity of detailed study of reaction dynamics. There are several entrance channel factors on which Super Heavy Elements (SHE, elements having Z ≥ 104) yield depends. Elements up to Z = 118 have been synthesized successfully where either doubly magic ⁴⁸Ca or ²⁰⁸Pb have been extensively used due to the low excitation energy reached in these reactions. But for the formation of elements beyond Og (Z =118), ⁴⁸Ca beam can no longer be used as in that case the other reaction partner required would be highly radioactive and are not available in required quantities. In this talk two measurements will be presented : ⁴⁸Ca, ⁵⁰Ti, ⁵⁴Cr + ²⁰⁸Pb reactions leading to heavy nuclei ²⁵⁶No and SHE nuclei ²⁵⁸Rf and ²⁶²Sg; ⁴⁸Ca, ⁵⁰Ti, ⁵⁴Cr + actinide targets which would form different isotopes of Fl (Z = 114)