Perhaps you should try some spelling variations:
duong vanh » duong van, duong manh, duong anh
duong xanh » duong manh, duong van, duong sach
hieu lang » chieu sang, hieu quang, nhieu tang
van doanh » toan doanh, van dong, van thanh
doanh cua » doanh luan
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
tuan cu » tuan tu, quan cua, tuan thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - van doanh cua nhung ((duong vanh) or (duong xanh)) tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - van doanh cua nhung ((duong vanh) OR (duong xanh)) tuan cu.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - van doanh cua nhung ((duong vanh) or (duong xanh)) tuan cu*.