Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
hieu xanh » hieu manh, hieu nganh, dieu hanh
tong cong » trong cong, cong cong, dung cong
cong dang » cong dong, cong dan, cong dung
dang hanh » dang thanh, ban hanh, dang van
cua tong » cua cong, cua dong, cua nong
hanh ca » hanh cac, hanh cat, hanh cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (chieu xanh)) - ((hanh tranh) OR (hanh trinh)) cua tong cong dang hanh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - ((hanh tranh) OR (hanh trinh)) cua tong cong dang hanh ca*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (chieu xanh)) - ((hanh tranh) OR (hanh trinh)) cua tong cong dang hanh ca*".