Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
tieu xanh » tieu danh, chieu xanh, tien anh
trinh han » trinh quan
hang cong » dang cong, hang nong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
han hang » hang hang, han chang, ban hang
dan toan » van toan, dan than, xuan toan

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 xanh) or (dieu hanh)) - canh trinh han hang cong ((dan toan) OR (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (dieu hanh)) - canh trinh han hang cong ((dan toan) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) or (dieu hanh)) - canh trinh han hang cong ((dan toan) OR (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (dieu hanh)) - canh trinh han hang cong ((dan toan) OR (manh toan)) cau*.