Perhaps you should try some spelling variations:
tuong quan » truong quan, thong quan, luong quan
dung cong » dung trong
san thanh » ban thanh, van thanh, son thanh
thanh bac » nhanh bac, thanh bai, thanh san
chi xanh » chi anh, chi danh, chi hanh
dung qua » duong qua, dung quan, dung cua
cong san » cong tac
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 - thanh ((dung qua) or (tuong quan)) dung cong san thanh bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - thanh ((dung qua) OR (tuong quan)) dung cong san thanh bac.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - thanh ((dung qua) or (tuong quan)) dung cong san thanh bac*.