Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo dieu » theo chieu, thuoc dieu, he dieu
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
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: ((theo dieu) or (theo tieu)) hanh - hanh ((tang cua) OR (mang cua)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo dieu) OR (theo tieu)) hanh - hanh ((tang cua) OR (mang cua)) nhung cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo dieu) or (theo tieu)) hanh - hanh ((tang cua) OR (mang cua)) nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo dieu) or (theo tieu)) hanh - hanh ((tang cua) OR (mang cua)) nhung cong tac toan cau*.