Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
chi xanh » chi anh, chi danh, chi hanh
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
toan cao » toan tap
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - cach mang cua nhung cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - cach mang cua nhung cong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - cach mang cua nhung cong tac ((toan cao) or (toan ban))*.