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