Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
luat huong » luat thuong, suat huong, xuat thuong
chau tinh » cuu tinh, ha tinh, cua tinh
luat hang » luat hanh, luat chung, luat thanh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
o chau » a chau, 3 chau, moc chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: o chau tinh - hanh trinh ((luat hang) or (luat huong)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o chau tinh - hanh trinh ((luat hang) OR (luat huong)) cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: o chau tinh - hanh trinh ((luat hang) or (luat huong)) cong tac toan cao*.