Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh luat, trinh quan
chan nhan » chan nan, chau nhan, thanh nhan
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu, sinh va
cong san » cong tac
chay nan » chan nan, chai nang, chae ran

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 ((trinh cua) or (sinh cua)) nhung cong san ((chay nan) or (chan nhan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh cua) OR (sinh cua)) nhung cong san ((chay nan) OR (chan nhan)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh cua) or (sinh cua)) nhung cong san ((chay nan) or (chan nhan))*.