Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
chuan bang » chua bang, chuan trang, can bang
bang cong » dang cong, bang song, hang cong
dam phan » d phan, va phan, van phan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu xanh - hanh trinh chuan bang cong ((dam phan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh trinh chuan bang cong ((dam phan) OR (dan chan)) cau*.