Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
hanh tinh » hanh trinh, nhanh tinh, canh tinh
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
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: ((ho chieu) OR (doi chieu)) xanh - ((hanh tinh) OR (thanh tinh)) cua nhung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - ((hanh tinh) OR (thanh tinh)) cua nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) xanh - ((hanh tinh) OR (thanh tinh)) cua nhung cong tac toan cau*.