Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
cong ngang » cong nhan, cong quang, cong lang
ngang than » nganh thanh, sang than, nang thanh
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
than cau » toan cau, phan cau, than cap

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 ((trung va) or (trung ha)) nhung cong ngang than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh ((trung va) OR (trung ha)) nhung cong ngang than cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((trung va) or (trung ha)) nhung cong ngang than cau*.