Perhaps you should try some spelling variations:
khai thuong » khac thuong, hai thuong, khai chuong
cong thanh » dong thanh, cong trinh, cong tan
theo lieu » theo tieu, theo chieu, theo yeu
lieu tinh » trieu tinh, diep tinh, bien tinh
hang hang » nang hang, cang thang, hung thang
thanh van » thanh san, thanh toan, thanh phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo lieu tinh - hang hang ((hai phong) or (khai thuong)) cong thanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo lieu tinh - hang hang ((hai phong) OR (khai thuong)) cong thanh van ban*.