Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
cong khan » cong khanh, cong nhan, cong phan
khan nang » kha nang, phan nang, chang nang
song xanh » song hanh, hoang xanh, duong xanh
ho chieu » hoc thieu, mot chieu, doi chieu
xanh van » anh van, canh van, hanh van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo chieu)) xanh - thanh cong khan nang song xanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - thanh cong khan nang song xanh van ban*.