Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
hanh trang » thanh trung, hanh trinh, minh trang
tieu tinh » trieu tinh, lieu tinh, kieu tinh
tuan nang » luan nang, xuan nang, tuan bang
nang cong » nang song, dang cong, bang 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

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

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