Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh van » trinh han, trinh quan, trinh toan
nang cong » nang song, dang cong, bang cong
trinh va » trinh vat, trinh ve, trinh vi
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) OR (chieu tinh)) - hanh ((trinh va) or (trinh van)) nang cong san tuan thu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu tinh)) - hanh ((trinh va) OR (trinh van)) nang cong san tuan thu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu tinh)) - hanh ((trinh va) or (trinh van)) nang cong san tuan thu".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu tinh)) - hanh ((trinh va) or (trinh van)) nang cong san tuan thu*.