Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, hieu nganh, hien hanh
tong song » tong cong, song song, dong song
van doanh » toan doanh, van dong, van thanh
doanh cap » doan cap, doanh cao, doanh chau
cua tong » cua cong, cua dong, cua nong
song van » hoang van, trong van, duong van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) OR (dieu hanh)) - ((minh hoang) or (hanh trinh)) cua tong song van doanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - ((minh hoang) OR (hanh trinh)) cua tong song van doanh cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - ((minh hoang) or (hanh trinh)) cua tong song van doanh cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - ((minh hoang) or (hanh trinh)) cua tong song van doanh cap*.