Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh van, trinh luat, trinh han
chi xanh » chi anh, chi danh, chi hanh
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu
hang dau » hang va, hang tai
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 - canh ((trinh vat) or (sinh vat)) nhung cong dan ((phan cau) or (hang dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh ((trinh vat) OR (sinh vat)) nhung cong dan ((phan cau) OR (hang dau)).
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - canh ((trinh vat) or (sinh vat)) nhung cong dan ((phan cau) or (hang dau))*.