Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
bang cong » dang cong, bang song, hang cong
cong manh » cong danh, duong manh, cong thanh
doi hieu » doi chieu, doc hieu, doi hien
cua bang » chua bang, cua ban, cua dang
toan ban » van 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 cua bang cong manh ((doanh tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hanh trinh cua bang cong manh ((doanh tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hanh trinh cua bang cong manh ((doanh tai) or (toan ban))*.