Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
trung cong » truong cong, trong cong, trung uong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua trung » cua truong, xuan trung, cua nhung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (toc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) cua trung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (toc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) cua trung cong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (toc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) cua trung cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (toc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) cua trung cong dan than cau*.