Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
dong von » dung von, dong co, dong hoa
dong hoc » dong co, dong luc
toan cao » toan tap
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 cua thong ((dong von) or (dong hoc)) ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh cua thong ((dong von) OR (dong hoc)) ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh cua thong ((dong von) or (dong hoc)) ((toan cao) or (toan ban))*.