Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
cua truong » cua trung, xuan truong, cac truong
hieu manh » chieu xanh, hieu nganh, hien hanh
cua trong » cua trung, qua trong, ca trong
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - hanh trang ((cua trong) OR (cua truong)) huong dan chan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - hanh trang ((cua trong) or (cua truong)) huong dan chan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - hanh trang ((cua trong) or (cua truong)) huong dan chan cau*.