Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
dung cong » dung trong
than cua » nhan cua, thai cua, ban cua
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau
han cua » hang cua, nhan cua, hanh cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (chau tinh)) - hanh ((han cua) OR (than cua)) dung cong tan tran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) OR (chau tinh)) - hanh ((han cua) or (than cua)) dung cong tan tran cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) OR (chau tinh)) - hanh ((han cua) or (than cua)) dung cong tan tran cau*.