Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap

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: doi chieu tinh - ((thanh tung) OR (canh tranh)) cua dung cong thanh ((than cao) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - ((thanh tung) or (canh tranh)) cua dung cong thanh ((than cao) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - ((thanh tung) or (canh tranh)) cua dung cong thanh ((than cao) OR (toan cao))*.