Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh manh » hanh mang, lanh manh, hoang manh
cua nhung » va nhung
doi lieu » duoc lieu, doi chieu, du lieu
manh cua » doanh cua, ban cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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: doi lieu tinh - hanh manh cua nhung ((cong dan) OR (cong san)) phan cau~.
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - hanh manh cua nhung ((cong dan) or (cong san)) phan cau*.