Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
truong cua » truong ca, truong quan, truong cao
thong cong » trong cong, tong cong, thong thong
trung cua » trung tuan, trung cap, dung cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: hoc ((chieu xanh) OR (chieu tinh)) - manh ((trung cua) or (truong cua)) thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - manh ((trung cua) OR (truong cua)) thong cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu tinh)) - manh ((trung cua) or (truong cua)) thong cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu tinh)) - manh ((trung cua) or (truong cua)) thong cong tac toan cau*.