Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
hach toan » thanh toan, manh toan
ho chieu » hoc thieu, doi chieu, mot chieu
tinh cua » trinh cua, sinh cua, tinh chat
tac toan » tap toan, tam toan, tich toan

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 (theo chieu)) sang - hanh tinh cua nhung cong ((tac toan) or (hach toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sang - hanh tinh cua nhung cong ((tac toan) OR (hach toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sang - hanh tinh cua nhung cong ((tac toan) or (hach toan)) cau*.