Perhaps you should try some spelling variations:
chieu tach » chiet tach, chieu sach, chiu trach
thanh tung » thanh cong
nhung cong » thong cong, hang cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
dan chan » dan gian, dan ca, van chat
tung va » trung va, tuong va, dung va

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 tach - thanh tung va ((nhung cong) or (dung cong)) ((xuan toan) or (dan chan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tach - thanh tung va ((nhung cong) OR (dung cong)) ((xuan toan) OR (dan chan)) cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu tach - thanh tung va ((nhung cong) or (dung cong)) ((xuan toan) or (dan chan)) cao*.