Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
trinh luan » trinh luat, trinh han, trinh toan
trinh quan » tinh quang, trinh luat, trinh han
dung cong » dung trong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi ((chieu sang) OR (chieu xanh)) - hanh ((trinh luan) or (trinh quan)) dung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((chieu sang) OR (chieu xanh)) - hanh ((trinh luan) OR (trinh quan)) dung cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((chieu sang) OR (chieu xanh)) - hanh ((trinh luan) or (trinh quan)) dung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: hoi ((chieu sang) OR (chieu xanh)) - hanh ((trinh luan) or (trinh quan)) dung cong tac toan cao*.