Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo lieu » theo tieu, theo chieu, thi lieu
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
theo yeu » theo tieu, thiet yeu, theo chu
mang cua » manh cua, dung cua, ban cua
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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: ((theo lieu) OR (theo yeu)) tinh - hanh mang cua nhung cong ((dan toan) OR (dan than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo lieu) OR (theo yeu)) tinh - hanh mang cua nhung cong ((dan toan) or (dan than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo lieu) OR (theo yeu)) tinh - hanh mang cua nhung cong ((dan toan) or (dan than)) cau*.