Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh sinh » canh tinh, canh binh, tinh sinh
vat nhung » va nhung, vap nhung, vai nhung
cong bang » cuong bang, dong bang, hong bang
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong san, cong tan, cong dan
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh sinh vat nhung ((cong ban) OR (cong bang)) ((than cau) OR (toan cau))~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh sinh vat nhung ((cong ban) or (cong bang)) ((than cau) or (toan cau))*.