Perhaps you should try some spelling variations:
nhan dang » nhan dan, phan dang, tran dang
dung cong » dung trong
chi xanh » chi anh, chi danh, chi hanh
dang cua » dung cua, dong cua, mang cua
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
than cao » toan cao, than cap, than sao
thai cao » tai cao, thoai cac, thuat cao
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 - nhan dang cua dung cong van ((than cao) or (thai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - nhan dang cua dung cong van ((than cao) OR (thai cao)).
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - nhan dang cua dung cong van ((than cao) or (thai cao))*.