Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh thang » nhanh thang, thanh thang, hanh trang
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
thang va » hang va, trang va, thong va
tan toan » tan tran, tap toan, van toan
toan cau » 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: ho chieu sach - hanh thang va ((nhung cong) or (hang cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh thang va ((nhung cong) OR (hang cong)) tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh thang va ((nhung cong) or (hang cong)) tan toan cau*.