Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
dung cong » dung trong
manh cua » doanh cua, ban cua
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) tinh - canh manh cua ((nhung cong) OR (dung cong)) tinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chieu)) tinh - canh manh cua ((nhung cong) OR (dung cong)) tinh toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chieu)) tinh - canh manh cua ((nhung cong) OR (dung cong)) tinh toan cau*.