Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chuc » trinh thuc, trinh chu, trinh phuc
hieu lang » chieu sang, hieu quang, nhieu tang
chuc dang » chuc nang, chuc danh, thuoc dang
dang cong » dung cong
doi hieu » doi chieu, doc hieu, doi hien
cong san » cong tac
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - hanh trinh chuc dang cong san ((toan tap) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hanh trinh chuc dang cong san ((toan tap) OR (van ban))*.