Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
dung huong » dung thuong, dung phuong, dong huong
hien xanh » hien hanh, hien nhanh, chieu xanh
suat dung » thuat dung, xuat duong, suat huong
toan tai » toan tap, doanh tai, toan cao
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: hoc hien xanh - hanh trinh suat dung huong dan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh suat dung huong dan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh suat dung huong dan ((toan tai) or (toan ban))*.