Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
dung cong » dung trong
trinh su » trinh tu, trinh san, trinh cau
cong tac » cong ty
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh trinh su dung cong tac ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh su dung cong tac ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh su dung cong tac ((toan cau) or (toan cao))*.