Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hien manh » tien manh, hieu manh, hien nhanh
hien hanh » dieu hanh
trang van » tran van, trang va, trong van
hang cong » dang cong, hang nong, bang cong
hach toan » thanh toan, manh toan
van hang » van khang, van hoang, van thang
tac toan » tap toan, tam toan, tich toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien manh) OR (hien hanh)) - hanh trang van hang cong ((tac toan) or (hach toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (hien hanh)) - hanh trang van hang cong ((tac toan) OR (hach toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien manh) OR (hien hanh)) - hanh trang van hang cong ((tac toan) or (hach toan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) OR (hien hanh)) - hanh trang van hang cong ((tac toan) or (hach toan)) tap*.