Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh tran » trinh trang, trinh toan, trinh tren
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
tran cau » tran chau, toan cau, ran cau

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 - canh ((tranh va) or (trang va)) dung cong trinh tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh ((tranh va) OR (trang va)) dung cong trinh tran cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh ((tranh va) or (trang va)) dung cong trinh tran cau*.