Perhaps you should try some spelling variations:
phuong dinh » phuong binh, phuong linh, phuong trinh
dung phuong » dung thuong, bang phuong, dung chung
theo chieu » theo tieu, ho chieu, theo chu
hanh thang » nhanh thang, thanh thang, hanh trang
mot chieu » doi chieu, ho chieu
dinh toan » tinh toan, hinh toan, minh toan
thang va » hang va, trang va, thong va
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (theo chieu)) xanh - hanh thang va dung phuong dinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo chieu)) xanh - hanh thang va dung phuong dinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) xanh - hanh thang va dung phuong dinh toan cau*.