Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tieu hanh » dieu hanh, tiem hanh, tien hanh
tranh cua » doanh cua, manh cua
bang cong » dang cong, hang cong, dung cong
bang song » nang song
dan toan » van toan, dan than, 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: theo tieu hanh - hanh tranh cua ((nhung cong) or (((bang cong) OR (bang song)))) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu hanh - hanh tranh cua ((nhung cong) OR (((bang cong) OR (bang song)))) dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu hanh - hanh tranh cua ((nhung cong) or (((bang cong) OR (bang song)))) dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo tieu hanh - hanh tranh cua ((nhung cong) or (((bang cong) OR (bang song)))) dan toan ban*.