Perhaps you should try some spelling variations:
hanh trinh » canh tranh
thien anh » thien danh, tien anh, thien thanh
xang cong » dang cong, bang cong, hang cong
dien anh » tieng anh, dien dan
chu xang » chua xang, chu bang, chuc nang
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (dien anh)) - ((hanh trinh) OR (hanh chinh)) chu xang cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (dien anh)) - ((hanh trinh) OR (hanh chinh)) chu xang cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien anh) or (dien anh)) - ((hanh trinh) OR (hanh chinh)) chu xang cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (dien anh)) - ((hanh trinh) OR (hanh chinh)) chu xang cong dan phan cau*.