Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, dien thanh
hien hanh » dieu hanh
cong quan » cuong quan, cong quang, tong quan
quan dung » quang dung, quan duong, qua dung
dung song » dung cong, dung dong, vung song
van tuan » van ban, anh tuan
van quan » 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 nhanh) or (hien hanh)) - thanh cong quan dung song ((van tuan) or (van quan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (hien hanh)) - thanh cong quan dung song ((van tuan) OR (van quan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (hien hanh)) - thanh cong quan dung song ((van tuan) or (van quan)) cao*.