Perhaps you should try some spelling variations:
chung cong » nhung cong, chong cong, phung cong
chieu sach » chinh sach, chiet tach, chieu sang
thang phan » thanh phan, thong phan, than phan
tan thang » toan thang, tran thang, van thang
hanh dan » thanh dan, hanh san, canh dan
ca chung » cac chung, cua chung, cao chung
cong tan » cong tac, cong san, cong thanh
hieu ca » hieu cac, hieu cua, hieu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu ca) or (chieu sach)) - hanh dan ca chung cong tan thang phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu ca) OR (chieu sach)) - hanh dan ca chung cong tan thang phan*.