Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » thong cong, hang cong, nhung lang
doi chieu » doc hieu, doi chi, ho chieu
nhung don » nhung van, nhung bo
dung cong » dung trong
trung va » truong va, trang va, trung ha
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh trung va ((((nhung cong) or (nhung don))) or (dung cong)) tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung va ((((nhung cong) OR (nhung don))) OR (dung cong)) tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung va ((((nhung cong) or (nhung don))) or (dung cong)) tinh toan cao*.