Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh quan » tinh quang, trinh luat, trinh han
doi chieu » doc hieu, doi chi, ho chieu
nang cong » nang song, dang cong, bang cong
trinh va » trinh van, trinh vat, trinh ve
cong san » cong tac
san tuan » van tuan, san luan, san quan
tuan thu » toan thuc, van thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - hanh ((trinh va) or (trinh quan)) nang cong san tuan thu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh ((trinh va) OR (trinh quan)) nang cong san tuan thu.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((trinh va) or (trinh quan)) nang cong san tuan thu*.