Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chua nang » chuc nang, chua xang, kha nang
qua dung » quang dung, qua song, qua cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
ha dong » hoat dong, van dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((ha dong) or (chua nang)) - hanh trang ((qua dung) OR (su dung)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((ha dong) OR (chua nang)) - hanh trang ((qua dung) OR (su dung)) cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((ha dong) or (chua nang)) - hanh trang ((qua dung) OR (su dung)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((ha dong) or (chua nang)) - hanh trang ((qua dung) OR (su dung)) cong dan toan cau*.