Perhaps you should try some spelling variations:
luat huong » luat thuong, suat huong, xuat thuong
canh trinh » canh tranh, hanh trinh, canh tinh
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
doi chieu » doc hieu, ho chieu, mot chieu
luat hanh » luat hinh, luat canh, luat danh
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 chieu) OR (doi chi)) lang - canh trinh ((luat hanh) or (luat huong)) cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) lang - canh trinh ((luat hanh) OR (luat huong)) cong thanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) lang - canh trinh ((luat hanh) or (luat huong)) cong thanh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) lang - canh trinh ((luat hanh) or (luat huong)) cong thanh toan ban*.