Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
toan cao » toan ban, toan tap
tinh » dinh, minh, kinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((cuu tinh) or (chinh sach)) - hanh tang cua dung cong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((cuu tinh) OR (chinh sach)) - hanh tang cua dung cong trinh toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((cuu tinh) or (chinh sach)) - hanh tang cua dung cong trinh toan cao*.