Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
nang cong » nang song, dang cong, bang cong
trinh va » trinh van, trinh vat, trinh ve
san luan » tang luan, hang luan, quan luan
dan luan » doanh luan, dung luan, tang luan
va nang » van nang, da nang, cam nang

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 nang cong ((san luan) OR (dan luan)) thu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh trinh va nang cong ((san luan) OR (dan luan)) thu*".