Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chat » tinh chat, trinh luat, trinh han
chat thong » chat chong, chat phong, chat trong
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
chinh tau » chinh tai, chinh cau, chinh tu
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
chan cau » phan cau, can cau, chinh cau
chinh ta » chinh tai, chinh va, chinh tri

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh trinh chat thong cong tac ((chan cau) or (((chinh tau) or (chinh ta))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh trinh chat thong cong tac ((chan cau) OR (((chinh tau) OR (chinh ta)))).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh chat thong cong tac ((chan cau) or (((chinh tau) or (chinh ta))))*.