Most of the stars in the Galaxy are in binary systems. Binaries should be possible as the hosting stars of planets. Searching for planetary companions to binaries, especially evolved close binary stars, can provide insight into the formation and the ultimate fate of circumbinary planets and shed light on the late evolution of binary stars. In order to do this, we have chosen some post common envelope binaries including sdB-type eclipsing binaries and detached WD+dM eclipsing binaries as our targets and monitored them for several years. In this paper, we will present some of our new observations and results for three targets, NSVS 07826147, NSVS14256825 and RR Cae.

ABSTRACT
1. INTRODUCTION
2. TARGETS AND METHOD
3. OUR NEW RESULTS
    3.1. NSVS 07826147
    3.2. NSVS 14256825
    3.3. RR Cae
4. SUMMARY
REFERENCES

• L. Y. Zhu(Yunnan Observatories, Chinese Academy of Sciences/Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences/Physical Sciences Department, Graduate University of the Chinese Academy of Sciences)
• S. B. Qian(Yunnan Observatories, Chinese Academy of Sciences/Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences/Physical Sciences Department, Graduate University of the Chinese Academy of Sciences)
• W. P. Liao(Yunnan Observatories, Chinese Academy of Sciences/Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences)
• E. Fernandez Lajus(Facultad de Ciencias Astronomicasy Geofsicas, Universidad Nacional de La Plata/Instituto de Astrofisica de La Plata (CCT La plata - CONICET/UNLP))
• B. Soonthornthum(National Astronomical Research Institute of Thailand)
• E. G. Zhao(Yunnan Observatories, Chinese Academy of Sciences/Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences/Physical Sciences Department, Graduate University of the Chinese Academy of Sciences)
• L. Liu(Yunnan Observatories, Chinese Academy of Sciences/Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences/Physical Sciences Department, Graduate University of the Chinese Academy of Sciences)