Perhaps you should try some spelling variations:
luat thuong » suat thong
hanh trinh » canh tranh, hanh chinh
xuat thong » xuat thuong, suat thong
chi sach » chinh sach, chieu sach, co sach
tan toan » tan tran, tap toan, dan toan
van toan » van tuan, van tan, van thanh
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 sach - hanh trinh ((luat thuong) or (xuat thong)) thong ((tan toan) OR (van toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - hanh trinh ((luat thuong) OR (xuat thong)) thong ((tan toan) OR (van toan)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi sach - hanh trinh ((luat thuong) or (xuat thong)) thong ((tan toan) OR (van toan)) ban*".