Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chua » trinh chuan, trinh cua, trinh chu
chua duong » chua dong, thuy duong, cau duong
tieu xanh » tieu danh, chieu xanh, tien anh
thanh cac » hanh cac, thanh bac, thanh ca
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac

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