Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
chi xanh » chi anh, chi danh, chi hanh
cong san » cong tac
toan cau » toan ban, toan tap
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
doi chi » doi khi

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 chi xanh - hanh trinh cua nhung cong san ((((toan cau) OR (toan tai))) OR (toan cao))~.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - hanh trinh cua nhung cong san ((((toan cau) or (toan tai))) or (toan cao))*.