Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chua » trinh chuan, trinh cua, trinh chu
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
chua dong » cua dong, ha dong, huy dong
dong cong » duong cong, dung cong, dang cong
cong tac » cong ty
nhan cau » nhanh cau, phan cau, nhin cau
nhan sau » nhan su, nhan san, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh trinh chua dong cong tac ((nhan cau) or (nhan sau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh trinh chua dong cong tac ((nhan cau) OR (nhan sau)).
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh trinh chua dong cong tac ((nhan cau) or (nhan sau))*.