Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo trieu » theo tieu, theo chieu
thep tieu » theo tieu, thep thiet, thep viet
hanh manh » hanh mang, lanh manh, hoang manh
cua nhung » va nhung
manh cua » doanh cua, ban cua
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo trieu) or (thep tieu)) tinh - hanh manh cua nhung cong ((van toan) OR (van tan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo trieu) OR (thep tieu)) tinh - hanh manh cua nhung cong ((van toan) OR (van tan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo trieu) or (thep tieu)) tinh - hanh manh cua nhung cong ((van toan) OR (van tan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((theo trieu) or (thep tieu)) tinh - hanh manh cua nhung cong ((van toan) OR (van tan)) cao*.