Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
trang tuan » tran tuan, trong tuan, tran xuan
trung tuan » trung thanh, trung tam, tran tuan
dung cong » dung trong
cong san » cong tac
san toan » van toan, dan toan, 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: ho ((chieu tinh) or (trieu tinh)) - hanh ((trang tuan) OR (trung tuan)) dung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (trieu tinh)) - hanh ((trang tuan) OR (trung tuan)) dung cong san toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) or (trieu tinh)) - hanh ((trang tuan) OR (trung tuan)) dung cong san toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (trieu tinh)) - hanh ((trang tuan) OR (trung tuan)) dung cong san toan cau*.