  We present the results of our extensive binary orbital motion corrected
pulsation search for 13 low mass X-ray binaries (LMXBs). These selected sources
exhibit burst oscillations in X-rays with frequencies ranging from 45 to 1122
Hz, and have a binary orbital period varying from 2.1 to 18.9 hours. We first
determined episodes that contain weak pulsations around the burst oscillation
frequency by searching all archival Rossi X-ray Timing Explorer (RXTE) data of
these sources. Then, we applied Doppler corrections to these pulsation episodes
to discard the smearing effect of the binary orbital motion and searched for
recovered pulsations at the second stage. Here we report 75 pulsation episodes
that contain weak but coherent pulsations around the burst oscillation
frequency. Furthermore, we report eight new episodes that show relatively
strong pulsations in the binary orbital motion corrected data.
