Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
tung tay » vung tay, dung tay, nung tay
van phan » van phong, van thanh, luan phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh tung tay ((nhung cong) or (thong thong)) van phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh tung tay ((nhung cong) OR (thong thong)) van phan cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh tung tay ((nhung cong) or (thong thong)) van phan cau*.