Perhaps you should try some spelling variations:
luat thuong » suat thong
hanh trinh » canh tranh, hanh chinh
luat nhung » luat chung, thuat nhung, cua nhung
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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 (ho chieu)) xanh - hanh trinh ((luat nhung) OR (luat thuong)) cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - hanh trinh ((luat nhung) OR (luat thuong)) cong san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) xanh - hanh trinh ((luat nhung) OR (luat thuong)) cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - hanh trinh ((luat nhung) OR (luat thuong)) cong san toan ban*.