Perhaps you should try some spelling variations:
cua thuong » cua truong, cua phuong, ca thuong
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh than » hanh han, hanh phan, nhanh thanh
hanh nhan » thanh nhan, danh nhan, anh nhan
cua thong » cua khong, cua tong, suat thong
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu xanh - ((hanh than) or (hanh nhan)) ((cua thong) OR (cua thuong)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((hanh than) OR (hanh nhan)) ((cua thong) OR (cua thuong)) cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((hanh than) or (hanh nhan)) ((cua thong) OR (cua thuong)) cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((hanh than) or (hanh nhan)) ((cua thong) OR (cua thuong)) cong tac toan cao*.