Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
tieu tinh » trieu tinh, lieu tinh, kieu tinh
lanh hang » lanh bang, lanh sang, tranh hang
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu
va dung » van dung, va duong, vat dung

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)) - lanh hang va dung ((cong dan) OR (cong tan)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu tinh) OR (tieu trinh)) - lanh hang va dung ((cong dan) OR (cong tan)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu tinh) or (tieu trinh)) - lanh hang va dung ((cong dan) OR (cong tan)) phan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu tinh) or (tieu trinh)) - lanh hang va dung ((cong dan) OR (cong tan)) phan cau*.