Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
doi hieu » doi chieu, doc hieu, doi hien
trinh ve » trinh he, trinh va, trinh vi
toan ban » van ban
ve dang » le dang, vu dang, de dang

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 ve dang cong trinh toan ban~.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hanh trinh ve dang cong trinh toan ban*.