Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
dung cong » dung trong
cong hinh » cong vinh, cong tinh, hong hinh
hinh toan » tinh toan, thanh toan, trinh toan
ho chieu » theo chieu, hoc thieu, mot chieu
tranh ap » tranh chap, tranh ban, tranh cac
toan cau » toan cao, toan ban, toan tap
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (ho chieu)) xanh - canh tranh ap dung cong hinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - canh tranh ap dung cong hinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - canh tranh ap dung cong hinh toan cau*.